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# Search Results: "trigonometry problems with solutions and answers"

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• 01:52

### Three Solutions! Can You Find Them? (math trick with answers)

281 views / 0 likes - added

★★ Please LIKE if you found at least ONE solution!! ★★ This is an impossible equation, because 6+4 is clearly not 4... BUT there are three solutions to this equation by moving just ONE matchstick. Can you find all three solutions? I am curious to see how

• 03:58

### Basic Trigonometry - Practice Quiz

236 views / 0 likes - added

Learn basic trigonometry with this fun interactive math quiz. You can skip questions by clicking on the time stamps below. I also provided the solutions to every question. Solution #1: https://www.youtube.com/watch?v=w-4d-IpJmRg Solution #2: https://www.y

• 05:23

### Basic Trigonometry - Word Problem #2

265 views / 0 likes - added

Learn basic trigonometry with this easy to follow example. I also provided the links for other basic trigonometry videos as well. Basic trigonometry quiz: https://www.youtube.com/watch?v=IGV1XufPd6E Basic Trigonometry Practice Question #1: https://www.you

• 04:21

### Basic Trigonometry - Word Problem

270 views / 0 likes - added

Learn basic trigonometry with this easy to follow example. I also provided the links for other basic trigonometry videos as well. Basic trigonometry quiz: https://www.youtube.com/watch?v=IGV1XufPd6E Basic Trigonometry Practice Question #1: https://www.you

• 04:29

### Basic Trigonometry - Practice Question #3

303 views / 0 likes - added

Learn basic trigonometry with this easy to follow example. I also provided the links for other basic trigonometry videos as well. Basic trigonometry quiz: https://www.youtube.com/watch?v=IGV1XufPd6E Basic Trigonometry Practice Question #1: https://www.you

• 04:41

### Basic Trigonometry - Practice Question #2

288 views / 0 likes - added

Learn basic trigonometry with this easy to follow example. I also provided the links for other basic trigonometry videos as well. Basic trigonometry quiz: https://www.youtube.com/watch?v=IGV1XufPd6E Basic Trigonometry Practice Question #1: https://www.you

• 07:06

### Basic Trigonometry - Practice Question #1

297 views / 0 likes - added

Learn basic trigonometry with this easy to follow example. I also provided the links for other basic trigonometry videos as well. Basic trigonometry quiz: https://www.youtube.com/watch?v=IGV1XufPd6E Basic Trigonometry Practice Question #2: https://www.you

• 09:17

### Basic Trigonometry

343 views / 1 likes - added

Introduction to trigonometry More free lessons at: http://www.khanacademy.org/video?v=Jsiy4TxgIME

• 15:14

### IIT JEE Trigonometry Problem 1

392 views / 0 likes - added

2010 IIT JEE Paper I #29 Trigonometry problem More free lessons at: http://www.khanacademy.org/video?v=X7GT9JKoAbo

• 12:08

### Questions No One Knows the Answers to

217 views / 0 likes - added

In the first of a new TED-Ed series designed to catalyze curiosity, TED Curator Chris Anderson shares his boyhood obsession with quirky questions that seem to have no answers. (Introducing the series "Questions no one knows the answers to") "Questions No

• 10:57

### Extraneous Solutions for Radical Equations

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u16_l3_t1_we2 Extraneous Solutions for Radical Equations

• 06:01

### Examples Algebraically Analyzing Solutions To Systems

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Algebraically analyzing solutions to systems

• 05:48

### Visually Completing Solutions Of Systems Of Two Variables

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Visually completing solutions of systems of two variables

• 04:12

### Constraining Solutions To Two Variable Linear Inequalities

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Constraining solutions to two variable linear inequalities

• 13:57

### Suspensions, Colloids and Solutions

281 views / 0 likes - added

Suspensions, Colloids and Solutions. The difference between Molarity and Molality. More free lessons at: http://www.khanacademy.org/video?v=3ROWXs3jtQU

• 01:42

### How To Use Rounding in Math Problems

526 views / 1 likes - added

How To Use Rounding in Math Problems. Part of the series: Math Problems. In certain math problems rounding may actually make finding a solution easier and more clear. Use rounding in math problems with help from a mathematics educator in this free video c

• 05:06

### Solutions to Three Variable System

213 views / 0 likes - added

u14 l3 t1 we4 Solutions to Three Variable System More free lessons at: http://www.khanacademy.org/video?v=145zOBT0LD4

• 11:10

### Extraneous Solutions to Radical Equations

293 views / 0 likes - added

• 06:30

### Hypotonic, Isotonic And Hypertonic Solutions(tonicity)

366 views / 0 likes - added

Hypotonic, isotonic and hypertonic solutions (tonicity). Seeing the effect of various types of solution on the direction of osmosis.

• 05:06

### Ordered Pair Solutions of Equations

206 views / 0 likes - added

u13 l1 t2 we3 Ordered Pair Solutions of Equations More free lessons at: http://www.khanacademy.org/video?v=SSNA9gaAOVc

• 04:55

### You will NOT know all of these sounds, I am SURE!! (with answers)

235 views / 0 likes - added

★★ For more sound broccolies like this... Subscribe to DB! ★★ You will NOT know all of these sounds, I am SURE!! I would be incredibly surprised if anyone actually identifies all of these animal sounds... This is a listening test to see how well you know

• 01:15

### Testing Solutions for a System of Inequalities

210 views / 0 likes - added

u14_l1_t2_we2 Testing Solutions for a System of Inequalities More free lessons at: http://www.khanacademy.org/video?v=XzYNh2wpO0A Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:03

### Extraneous Solutions to Rational Equations

269 views / 0 likes - added

u15_l2_t1_we2 Extraneous Solutions to Rational Equations More free lessons at: http://www.khanacademy.org/video?v=bml74_PsfwA Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:37

### Discriminant for Types of Solutions for a Quadratic

377 views / 0 likes - added

u16_l5_t2_we4 Discriminant for Types of Solutions for a Quadratic More free lessons at: http://www.khanacademy.org/video?v=1213qW5k55I Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 06:34 Popular

### 10 IQ and Riddles For Kids With Tricky Answers

1,138 views / 0 likes - added

10 IQ and Riddles For Kids With Tricky Answers. These are the best 10 IQ and Riddles For Kids With Tricky Answers. These are perfect for brain teasers for kids, teens and all. Please try this once and do not forget to like, share and comment.

• 05:13

### Do you have good EYES? (test with answers)

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★★ For more broccolies like this... Subscribe to DB! ★★ The überchallenge is to be able to identify all the different colors in the video... if you see all 20 colors, you must have massively good eyes! ⤋ BEST OF DAILY BROCCOLI ⤋ ---------------------

• 10:07

### New IQ Test! (with answers)

325 views / 3 likes - added

★★ More Broccoli = More IQ :DD (Please subscribe!!!) ★★ This IQ test is amazingly accurate. Check how many questions you got right and what it means in terms of your IQ. Are you smart? How intelligent are you? What is my IQ? This new IQ Test will tell you

• 03:36

### 90% people fail!! (How smart are you? - test with answers)

404 views / 2 likes - added

Let me know your answers! - 10,000 comments = Happy Broccoli! ★★ For more Brain brocs... Subscribe to DB! ★★ This sequence of animal questions will likely mess you up... It's a type of creative IQ test that will test how smart you are. I didn't answer the

• 02:58

### Überchallenge: Make NO Mistake! (with answers)

194 views / 1 likes - added

★★ For more ӹ ... Subscribe to DB! ★★ The überchallenge is to control your brain to such an extent, that you are able to ignore words and call out the colors... sounds simple, but it is in fact really hard!! I hope you like the challenge. DO leave me a co

• 02:27

### Checking Ordered Pair Solutions To Equations Example 2 | Algebra I | Khan Academy

274 views / 0 likes - added

Second example of ordered pair solutions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?utm_so

• 04:47

### Puzzles: 5 "easy"... and one impossible!! (with answers)

215 views / 0 likes - added

★★ For more broccoli puzzles stuffs... Subscribe to DB! ★★ The überchallenge is to solve the impossible parking lot question (brain teaser puzzle) at the end. But first warm up with some supposedly "easy" puzzles at the beginning. I hope you enjoy it and

• 04:01

### Got Some Solutions?: Crash Course Kids #26.1

398 views / 0 likes - added

So, there might not be just one solution to a problem. I know that may sound weird, but it's true. So, how do you come up with multiple solutions? In this episode of Crash Course Kids, Engineer Sabrina shows us how to do that. Watch More Crash Course Kids

• 02:35

### Checking Ordered Pair Solutions To Equations Example 1 | Algebra I | Khan Academy

329 views / 0 likes - added

Checking ordered pair solutions to equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?ut

• 05:58 Popular

### Tricky Riddles with Funny Answers - Can you solve?

904 views / 1 likes - added

Tricky Riddles with Funny Answers These tricky riddles and funny riddles can be solved by any kid or adult who has good sense of humor. These riddles with answers will always test your brain and make your brain scratch. There are 10 Tricky Riddles with Fu

• 05:19

### Riddles: 5 "easy"... & one IMPOSSIBLE! (with answers)

321 views / 0 likes - added

★★★★ Riddles and more... Subscribe to Daily Broccoli! ★★★★ This is a fun video with 5 supposedly "easy" riddles with answers, and one impossible question. I love these riddles, because they are clever and in fact not all that difficult. But still I wasn't

• 07:11

### Graphing Solutions To Two-variable Linear Equations Example 2 | Algebra I | Khan Academy

354 views / 0 likes - added

Graphing solutions to 2 variable linear equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/graphing-solutio

• 02:13

### Crazy Math Trick: I will guess Your Age! (2017 with answers)

398 views / 3 likes - added

★★ For more broccolies like this... Subscribe to DB! ★★ I will guess your age! This is a crazy math trick that is likely to impress you and your friends too! You start with a RANDOM number and then end up with your Age and that number... pretty incredible

• 12:18

### Bill Nye Answers Even More Science Questions From Twitter | Tech Support | WIRED

265 views / 0 likes - added

Bill Nye uses the power of Twitter to answer even more science questions. How does the internet work? What's the difference between a meteor, meteorite, and an asteroid? Does anyone really know how gravity works? Is water wet? Bill answers all these quest

• 03:28

### 95% Fail: 8 funny trick questions your friends will ALWAYS get wrong! (with answers)

412 views / 1 likes - added

These are 8 awesome trick questions your friends will always get wrong! Guaranteed! :) I have picked these 8 funny brain teasers because I am sure that no-one would get them right when asked spontaneously. See for yourself, whether you will get the right

• 06:03

### 10 Trick Questions your friends will ALWAYS get Wrong!! (with answers)

262 views / 0 likes - added

These are 10 awesome trick questions your friends will always get wrong! Guaranteed! :) I have picked these 10 funny brain teasers because I am sure that no-one would get them right when asked spontaneously. See for yourself, whether you will get the righ

• 04:55

### Solve the right triangle - Trigonometry Brain Teaser

514 views / 0 likes - added

A square is inside of a right triangle. The length of each side of the triangle is 3-4-5. Given this information what are the dimensions of the square? Can you solve this right triangle? My name is Chris and my passion is to teach math. Learning should ne

• 08:21

### Solutions: Crash Course Chemistry #27

336 views / 0 likes - added

This week, Hank elaborates on why Fugu can kill you by illustrating the ideas of solutions and discussing molarity, molality, and mass percent. Also, why polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes. All that plus

• 13:23

### Best Colorblind Tests And Crime Riddles With Answers!

102 views / 0 likes - added

Force your brain to work with these crime riddles and colorblind test with answers! Try to give the right answers to these riddles for kids and adults as fast as possible. If you can't concentrate and feel exhausted all the time try to solve tricky riddle

• 13:34

### Water and Solutions -- for Dirty Laundry: Crash Course Chemistry #7

392 views / 0 likes - added

Dihydrogen monoxide (better know as water) is the key to nearly everything. It falls from the sky, makes up 60% of our bodies, and just about every chemical process related to life takes place with it or in it. Without it, none of the chemical reactions t

• 04:13

### Adults Stumped By Geometry Problems For 10 Year Olds. Can You Solve Them?

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These homework problems were given to 10 year old children (Year 5) in England (Glossop, Derbyshire) and they were posted to Facebook when some adults found them to be difficult. One person claimed the problems were impossible to solve. Can you figure the

• 01:48

### Fraction word problems 1 (ex 1)

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Fraction word problems 1 (ex 1)

• 06:36

### Arc Measure Example Problems

342 views / 0 likes - added

Arc measure example problems

• 02:03

### Fraction word problems 1 (ex 4)

244 views / 0 likes - added

Fraction word problems 1 (ex 4)

• 01:42

### Fraction word problems 1 (ex 3)

258 views / 0 likes - added

Fraction word problems 1 (ex 3)

• 01:04

### Fraction word problems 1 (ex 2)

230 views / 0 likes - added

Fraction word problems 1 (ex 2)

• 14:15

### Percent Problems

275 views / 0 likes - added

Percent Problems from Chapter 3 of ck12.org Algebra I textbook

• 13:27

567 views / 0 likes - added

These short and fun brain teasers with answers for kids and adults, picture puzzles and text riddles will brighten up your mood and will force your brain to exercise (just a bit)! Don't forget TELL IN THE COMMENTS the answer to the last MATH PUZZLE, I kno

• 08:45

### Basic Trigonometry

328 views / 0 likes - added

An introduction to trigonometric functions: sine, cosine, and tangent.

• 02:13

### Multiplying Fractions Word Problems (ex 1)

338 views / 0 likes - added

Multiplying Fractions Word Problems (ex 1)

• 06:02 Popular

### 10 Trickiest Animal Riddles For Kids With Answers!!

985 views / 0 likes - added

10 Trickiest Animal Riddles For Kids With Answers IMPOSSIBLE EINSTEIN RIDDLES TO SOLVE - Only 2% Pass!! https://www.youtube.com/watch?v=yhUsXzvU3aQ IMPOSSIBLE HIDDEN OBJECTS TO TEST YOUR BRAIN!! : https://www.youtube.com/watch?v=y4YqtleJqSg EPIC CRIME RID

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• 02:45

### Mixture problems 1

301 views / 0 likes - added

U06_L2_T2_we1 Mixture problems 1 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:56

### Basic Trigonometry II

340 views / 0 likes - added

Another example of figuring out the sine, cosine, and tangent of an angle in a right triangle

• 03:55

### Interpreting Function Graphs Word Problems

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Interpreting function graphs word problems

• 06:44

### Mixture problems 2

256 views / 0 likes - added

U06_L2_T2_we2 Mixture problems 2 More free lessons at: http://www.khanacademy.org/video?v=OBVGQt1Eeug Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:07

### Mixture problems 3

253 views / 0 likes - added

U06_L2_T2_we3 Mixture problems 3 More free lessons at: http://www.khanacademy.org/video?v=JVlfQEhzLMM Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 16:29

### Trigonometry - Easy to understand 3D animation

148 views / 0 likes - added

IMPORTANT CORRECTION: The proper way to write the law of cosines is C^2 = A^2 +B^2 - 2AB cos(Ψ)

• 04:37

### Solving Percent Problems 2

270 views / 0 likes - added

U05_L2_T1_we2 Solving Percent Problems 2 More free lessons at: http://www.khanacademy.org/video?v=N4kDzoQOngY Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:27

### Solving Percent Problems 3

293 views / 0 likes - added

U05_L2_T1_we3 Solving Percent Problems 3 More free lessons at: http://www.khanacademy.org/video?v=DAikW24_O0A Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:59

### Systems and rate problems

265 views / 0 likes - added

U06_L2_T1_we1 Systems and rate problems More free lessons at: http://www.khanacademy.org/video?v=at4T4n4JYNc Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 10:05

### Systems and rate problems 2

226 views / 0 likes - added

U06_L2_T1_we2 Systems and rate problems 2 More free lessons at: http://www.khanacademy.org/video?v=H5w55UbIZTw Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:56

### Systems and rate problems 3

258 views / 0 likes - added

U06_L2_T1_we3 Systems and rate problems 3 More free lessons at: http://www.khanacademy.org/video?v=hTBQUibtnBk Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 08:52

### Bill Nye Answers Science Questions From Twitter | Tech Support | WIRED

368 views / 0 likes - added

Bill Nye uses the power of Twitter to answer some common science questions. Check out Bill's new show on Netflix "Bill Nye Saves The World" premiering April 21st! Still haven’t subscribed to WIRED on YouTube? ►► http://wrd.cm/15fP7B7 CONNECT WITH WIRED We

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• 07:15

### Tony Hawk Answers Skateboarding Questions From Twitter | Tech Support | WIRED

286 views / 0 likes - added

Tony Hawk uses the power of Twitter to answer some common questions about skateboarding. Will there ever be another Tony Hawk's Pro Skater? What skateboarding trick was the hardest to learn? Are you ever too old to start skating? Tony also demonstrates ho

• 02:02

### Application problems with equation in one variable

231 views / 0 likes - added

u10_l1_t3_we2 Application problems with equation in one variable More free lessons at: http://www.khanacademy.org/video?v=iimpwYBiKNg Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 06:17

### The Fermi Paradox II — Solutions And Ideas – Where Are All The Aliens?

359 views / 1 likes - added

Where are all the aliens? The universe is too big and too old, why have we not met aliens yet? Do they live in computers? Were they wiped out by an ancient super intelligence? Or are we just to primitive to understand their motives? Whatever the answer is

• 07:08

### Application problems involving units of weight

286 views / 0 likes - added

U06_L1_T2_we3 Application problems involving units of weight More free lessons at: http://www.khanacademy.org/video?v=gnCL_0uA6Ds Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:29

### Solving application problems involving units of volume

258 views / 0 likes - added

U06_L1_T3_we3 Solving application problems involving units of volume More free lessons at: http://www.khanacademy.org/video?v=KgoXx_58QyQ Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 13:00

### Problems with Zero - Numberphile

247 views / 0 likes - added

Dividing by zero, zero divided by zero and zero to the power of zero - all pose problems! Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile This video features Matt Parker and James Grime - ht

• 04:32

### Math Word problems - Solving triangles

357 views / 0 likes - added

Become an expert in solving math word problems! In this problem you will learn how to use triangles to solve the height of a building. A man steps back 50 feet which the angle to the top of the building change 15 degrees. Using this information find the h

• 03:23

### Comparison Word Problems | Addition And Subtraction Within 20 | Early Math | Khan Academy

329 views / 0 likes - added

• 04:42

### How To Write Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

515 views / 0 likes - added

Learn how to write expressions with variables to describe situations described in word problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-alg-e

• 01:48

### Hospitals are running out of baking soda solutions

250 views / 0 likes - added

The shortage of baking soda solution is hitting hospitals nationwide and life-saving operations are being put on hold, the New York Times reports. A hospital in Alabama recently postponed seven open-heart operations and one doctor said that he tried mixin

• 03:09

### How To Write Basic Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

351 views / 0 likes - added

Learn how to write basic expressions with variables to describe situations described in word problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th

• 02:15

### Scientists Get Creative When Solving Problems

149 views / 0 likes - added

5 creative ways scientists have solved problems inside and outside the lab. Subscribe to our new channel, INSIDER food: http://insder.co/2kWwBKZ The INSIDER team believes that life is an adventure! Subscribe to our channel and visit us at: https://thisisi

• 14:11

### The Mole 4 - Converting Mass to Atoms: Practice Problems

105 views / 0 likes - added

Craig Beals from Beals Science explains how to convert between mass in grams to atoms using the mole. The video includes molar mass, Avogadro's number, converting and mole practice problems. To learn more visit: http://www.BealsScience.com For the previou

• 12:26

### Weve Got Answers to Five Whys

81 views / 0 likes - added

Who? What? When? Where? Why? Thats a lot of questions all at once. Lets stick with why for this reel. Well going to tell you everything from why mathematicians are obsessed with a certain kind of chalk to why a Japanese company is making baseball bats out

• 05:50

### Length Word Problems | Measurement And Data | Early Math | Khan Academy

341 views / 0 likes - added

• 02:12

### Fewer Word Problems | Addition And Subtraction Within 100 | Early Math | Khan Academy

346 views / 0 likes - added

• 04:28

### Adding And Subtracting On Number Line Word Problems | Early Math | Khan Academy

334 views / 0 likes - added

• 04:51

### How to solve problems like a designer

154 views / 0 likes - added

The design process for problem-solving, in 4 steps. Subscribe to our channel! http://goo.gl/0bsAjO Many thanks to Tim Brown and TED for this interview we recorded at TED 2017. IDEO is an international design company founded in 1991. In the beginning, IDEO

• 03:50

### Most People Fail!! (IQ test with answers)

192 views / 0 likes - added

Most people fail!! That's because they are either artists or scientists, but rarely both! See if you are smart enough to pass this Brain Test. Let me know in the comments! I hope you enjoy this brain challenge. I have combined visual memory with number me

• 02:50

### Pokemon Quiz: Guess the Type! (#1 with answers)

213 views / 0 likes - added

How well did you do? Please let me know in the comments! Test yourself and then: Test your friends! In this quiz you will see several pokemons and a few options for their type. You have to get all 5 right to be a Pokemon Genius. :) I hope you enjoy it!

• 02:39

### Pokemon Quiz: Guess the Type! (#2 with answers)

226 views / 0 likes - added

How well did you do? Please let me know in the comments! Test yourself and then: Test your friends! In this quiz you will see several pokemons and a few options for their type. You have to get all 5 right to be a Pokemon Genius. :) I hope you enjoy it!

• 02:02

279 views / 1 likes - added

★★ Find your personality here below! ★★ ...see if it accurately describes your personality: ##### COLORS ########## Blue: You are deep, calm, caring, reliable and trustworthy. Also you appear strong and confident. You also crave harmony and peace. Red: Yo

• 02:35

### 6 Trick Questions your Friends will ALWAYS get wrong! (with answers)

172 views / 0 likes - added

These are 6 awesome trick questions your friends will always get wrong! Guaranteed! :) I have picked these 6 funny brain teasers because I am sure that no-one would get them right when asked spontaneously. See for yourself, whether you will get the right

• 01:34

### Solving Ratio Problems With Graph | Pre-Algebra | Khan Academy

342 views / 0 likes - added

In this example we'll plot points on the x and y axis to reflect the given ratios. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/solving-ratio-problems-wi

• 05:05

### Solving Ratio Problems With Tables Example 1 | Pre-Algebra | Khan Academy

249 views / 0 likes - added

We're displaying ratios in a table format here, and then asking: given a ratio, solve for equivalent ratios. Here are a few examples to practice on. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/r

• 02:53

### More Word Problems | Addition And Subtraction Within 100 | Early Math | Khan Academy

349 views / 0 likes - added

• 01:52

### Werewolf Problems | Uncle Grandpa | Cartoon Network

367 views / 1 likes - added

Strange things start happening when Uncle Grandpa installs a moon roof in the RV. CN GAMES: http://bit.ly/CNGames SUBSCRIBE: http://bit.ly/109Y6wq WATCH MORE: http://bit.ly/CNUncleGrandpa About Uncle Grandpa: Uncle Grandpa is everyone's "magical" uncle an

• 08:34

### LCM And GCF Word Problems | Factors And Multiples | Pre-Algebra | Khan Academy

349 views / 1 likes - added

Here we have a couple of word problems--one searching for the least common multiple and the other for the greatest common factor. Just read them with us slowly and follow along. You'll get it. Practice this lesson yourself on KhanAcademy.org right now: ht

• 13:30

### IP Problems, YouTube, And The Future: Crash Course Intellectual Property #7

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In which Stan Muller talks about some of the problems in Intellectual Property law as it exists today. He'll also teach you a little about how IP law applies to everyone's favorite media platform, YouTube. Lastly, he'll do a little prognosticating, and tr

• 01:14

### Can Namib Desert Beetles Help Us Solve Our Drought Problems? | Think Like A Tree

467 views / 1 likes - added

Namib desert beetles live in an area with little ground water, so how is it that they have no trouble finding H2O? Find out how the resourceful insects use their wing scales to absorb water droplets from fog, and how we can use them as a model for combati

• 19:37

### Smart Math Techniques - Solve maths problems in seconds

350 views / 0 likes - added

Topic In this topic our expert trainer Shruti explains how to solve difficult maths problems in a matter of seconds. OBJECTIVE To enable you to to do faster calculation using best speed maths techniques and make you score more in your exams. These speed m

• 01:03

### Subtraction Word Problems Within 10 | Basic Addition And Subtraction | Early Math | Khan Academy

355 views / 0 likes - added

Learn how to solve word problems by subtracting small numbers (numbers 10 or less). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-add-sub-word-problem-wit

• 01:42

### Addition Word Problems Within 10 | Basic Addition And Subtraction | Early Math | Khan Academy

409 views / 1 likes - added

• 09:03

### Quantum Vortices and Superconductivity + Challenge Answers | Space Time | PBS Digital Studios

197 views / 0 likes - added

Scientists studying quantum vortices and their impact on superconductivity just won the Nobel Prize. Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail

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We'll use algebra to solve this percent problem. Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-word-probs-pre-alg/v/solving-percent-problems-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the

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388 views / 0 likes - added

We're writing inequalities by using information from the word problems. Woohoo! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writing-numeric

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Understand the connection between decimals and fractions using a grid diagram. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimal-fractions/e/fraction-decimal-in

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Beach nourishment is the latest chapter in a never-ending tale of erosion. Subscribe to our channel! http://goo.gl/0bsAjO About 80 to 90 percent of sandy beaches along America's coastlines are eroding. This is a problem because the developments humans bui

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Why does shaken soda explode? Does ice melt first in fresh or salt water?Thank you Squarespace for sponsoring this video. Go to https://squarespace.com to save 10% off your first purchase of a website or domain using code: VERITASIUMThis video features ex

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Learn about engineers, who dream up a lot of the things you use every day, from toys to tools! ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome produc

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It's time to test how fit your brain is! These mixed brain teasers will test all sides and levels: 00:14 - Cool quiz questions If you can pass these cool quiz questions, you're on the same page with the new generation! A hint from me: these cool riddles a

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Dr Hannah Fry discusses Secret Santa, anonymity and derangements. And a better way to do it. More Hannah on Numberphile: http://bit.ly/hannah_vids Hannah's co-written Xmas book: http://amzn.to/2g8mIn6 Hannah's love/math book: http://bit.ly/frylovebook Num

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324 views / 0 likes - added

We don't live in a perfect world, and neither do gases - it would be great if their particles always fulfilled the assumptions of the ideal gas law, and we could use PV=nRT to get the right answer every time. Unfortunately, the ideal gas law (like our cul

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### 8 easy ways to fix common iPhone problems

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Have a problem with your iPhone? Don't run to the Genius Bar just yet. There are tons of easy iPhone fixes you can handle yourself using common household items. Read more: http://www.businessinsider.com/sai FACEBOOK: https://www.facebook.com/techinsider T

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A cat problem needs a cat solution! Ben must embrace his inner cat in order to get his new alien, Rath, under control. Episode: Rath of Con CN GAMES: http://cartn.co/ytgames SUBSCRIBE: http://cartn.co/subscribe ABOUT BEN 10: Why have one set of super powe

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571 views / 2 likes - added

What happens to a single ecosystem when the amount of freshwater available in it changes? Not really much good. In this episode of Crash Course Kids, Sabrina talks about ecosystems and how one small change can lead to a cascade effect in the entire ecosys

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311 views / 0 likes - added

Watch Sal work through a harder Right triangle word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s6-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the

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295 views / 0 likes - added

Watch Sal work through a basic Right triangle word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s2-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the

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309 views / 1 likes - added

Welcome to the 20 block challenge. In this challenge I am trying unlock the platinum trophy on the Playstation 4 version while only ever placing down 20 blocks. Playlist - https://www.youtube.com/playlist?list=PLEZiAg2bYC7k_wayTLT-9bbwTp0wB5kQ1 Twitter -

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289 views / 0 likes - added

Watch Sal work through a harder Volume word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s2-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the previou

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### Volume Word Problems — Basic Example | Math | New SAT | Khan Academy

308 views / 0 likes - added

Watch Sal work through a basic Volume word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s1-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the previous

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459 views / 0 likes - added

Learn how to write basic equations to model real-world situations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-super-yoga/e/equations-in-one-vari

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### Quadratic And Exponential Word Problems — Harder Example | Math | New SAT | Khan Academy

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### Quadratic And Exponential Word Problems — Basic Example | Math | New SAT | Khan Academy

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### Linear Equation Word Problems — Basic Example | Math | New SAT | Khan Academy

471 views / 0 likes - added

Watch Sal work through a basic Linear equations word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-heart-of-algebra/v/sat-math-h2-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the prev

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342 views / 0 likes - added

Discussion of how "normal" a distribution might be More free lessons at: http://www.khanacademy.org/video?v=79duxPXpyKQ

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A little trigonometry to figure out the area of a triangle More free lessons at: http://www.khanacademy.org/video?v=smtrrefmC40

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326 views / 0 likes - added

Trigonometry and geometry to find the area of an equilateral (but not regular) hexagon More free lessons at: http://www.khanacademy.org/video?v=Ec-BKdC8vOo

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360 views / 0 likes - added

The Massachusetts Institute of Technology (MIT) is one of the top ranked universities in the world. This question appeared on its admissions exam nearly 150 years ago. "The perpendicular dropped from the vertex of the right angle upon the hypotenuse divid

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Have fun while you lose weight! Zumba Dance Workout is an enjoyable way to stay fit. Welcome to the best of Zumba, offered by http://www.escuelasalsabarcelona.com/zumba/ who believe that the best way to lose weight is by having a blast! Enjoy the video! F

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### TOUGH Interview Question - Ways To Give 11 Coins To 3 People

282 views / 0 likes - added

How many ways can you divide 11 coins to 3 people? How many ways are there if each person has to get at least 1 coin? This puzzle is an example of a technical interview question. The video demonstrates the solution, which indicates the number of non-negat

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A cylindrical can with volume V can be made in different ways. The cylinder can be wide and short (large radius and small height), or it can be narrower and taller (small radius and larger height). Which shape uses the least material? That is, which can h

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### Calculating the circumference of the Earth in 200 BC

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In one of the dopest displays of critical thinking in history, Eratosthenes estimated the circumference of the Earth. All he had was a pole, the sun, knowledge of a famous well in Egypt, and potentially money to pay someone to walk the distance between tw

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### Pixar: The Math Behind The Movies - Tony DeRose

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Finally! A compilation of world's greatest magic tricks and cool trivia that will WOW your brain to the max: 00:14 - The secrets of one of the most famous magic tricks for kids are finally revealed! 02:40 - Secrets behind logos that we see every day! - Lo

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### The Cosmic Conspiracy Of Dark Energy Challenge Question | Space Time | PBS Digital Studios

286 views / 0 likes - added

We're living in the middle of a remarkable cosmic coincidence, an incredibly brief period of time where both matter and dark energy both play a part in the fate of our universe. To better understand this video watch our other Dark Energy episodes: Part 1

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497 views / 1 likes - added

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as \$0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

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### Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained

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If 11x11=4 and 22x22=16, what is 33x33=? This puzzle has been shared with the claim that only geniuses can solve it. It has gotten millions of views on the internet and Facebook as people have debated the correct answer. In this video I present what many

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We've talked about variables and solving problems. But how do we keep working on a problem if the first solution doesn't fix it? Trials! In this episode of Crash Course Kids, Sabrina shows us how to use Trials to figure out what the problems are with our

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How to Do Fractional Coefficients. Part of the series: Math Problems. Fractional coefficients need to be completed in a very specific way. Learn how to do fractional coefficients in math problems with help from a mathematics educator in this free video cl

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"In this sentence, the number of occurrences of the digit 0 is __, of the digit 1 is __, of the digit 2 is __, of the digit 3 is __, of the digit 4 is __, of the digit 5 is __, of the digit 6 is __, of the digit 7 is __, of the digit 8 is __, and of the d

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778 views / 1 likes - added

Test your brain power and boost your logic with these mystery riddles that will trick your mind. Not only these riddles and answers will nicely exercise your brain, but also test your brain power in the most relaxed and fun way! Numerous studies have show

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New emoji quiz challenge for those who stays up to date with world famous brains, movies and songs! These funny riddles will test your mind and logic. Let's see if you can stand up to this challenge: 00:14 - New emoji quiz. Warm up your brain with this sh

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Can you fix 6 + 4 = 4 by moving 1 matchstick? This problem has gone viral on Facebook, with one post having over 400,000 shares. The ground rules are you cannot break a stick, it should be an equality (=), and you have to use 7-segment numbers (the block

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### How To Grow Anything | The Great Courses

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Learn how to take advantage of small spaces to blend ornamental and edible plants, and come up with creative solutions for everyday gardening challenges, including color balance, climate restrictions and more.

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283 views / 0 likes - added

Last week, Hank talked about how stuff mixes together in solutions. Today, and for the next few weeks, he will talk about the actual reactions happening in those solutions - atoms reorganizing themselves to create whole new substances in the processes tha

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485 views / 0 likes - added

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585 views / 0 likes - added

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Warren Buffett once challenged Bill Gates to a dice game similar to this one. How would you play the game? Blog post (text explanation) http://wp.me/p6aMk-4ro Source The dice numbers and the story are described at Microsoft Research's website for non-tran

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229 views / 0 likes - added

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How can 2 people split up a cake, knowing that each person wants to get a larger piece than the other? What about 3 people, or even N people? This is an example of a fair division problem from game theory. There are many cake-cutting algorithms to produce

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Ever wonder why you're more prone to mosquito bites than your friends? It might have to do with the carbon dioxide you're inhaling, whether your Blood Type A or B, or it could be because you're drinking more beer than cocktails. Subscribe to NowThis Futur

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### Why Do Mosquitoes Bite Some People More Than Others? | What The FAQs | NowThis

59 views / 0 likes - added

Ever wonder why you're more prone to mosquito bites than your friends? It might have to do with the carbon dioxide you're inhaling, whether your Blood Type A or B, or it could be because you're drinking more beer than cocktails. Subscribe to NowThis Futur

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575 views / 1 likes - added

Pick a 2 digit number. Got it? Now and add up the digits. Subtract that from your original number. Look up the resulting number in the table. Can I figure out the symbol you are looking at? This video predicts your symbol and explains why this math trick

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355 views / 0 likes - added

★★ Secret message because... we reached + 278k SUBS!!!! ★★ Massive thank you! You are the best!! The überchallenge is to be able to find all the letters that are hidden in the images. ...if you see all 12 letters, you must have massively good eyes! This i

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326 views / 0 likes - added

I'm thinking of a 10 digit number that uses the each digit 0 to 9 exactly once and where the number formed by the first n digits is divisible by n. What could my number be? The video explains how to find the answer using tests for divisibility. Blog post:

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577 views / 0 likes - added

An evil logician takes Alice and Bob captive. They have a chance to escape if they can deduce the total number of trees in the prison. Can they figure it out? Source of puzzle wu: riddles forum https://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi?board

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303 views / 0 likes - added

Gow to multiply numbers by drawing lines. Get the Multiply By Lines Book! https://www.amazon.com/gp/product/1500866148/ If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions Connect on social media. I update each s

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### Can You Solve The Two Rope Puzzle?

313 views / 0 likes - added

You have two ropes and a lighter. Each rope burns in 60 minutes, but the ropes do not burn at a constant rate. How can you measure 45 minutes by burning the ropes? Some of you might have heard this problem before. If so, try this variation: how can you me

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View full lesson: http://ed.ted.com/lessons/your-brain-can-solve-algorithms-david-j-malan An algorithm is a mathematical method of solving problems both big and small. Though computers run algorithms constantly, humans can also solve problems with algorit

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### Crazy Math Trick: I will guess Your Age! (OLD 2016 version)

333 views / 0 likes - added

Check here for the 2017 version: https://www.youtube.com/watch?v=PQjNF34H3Bs&feature=youtu.be ★★ For more broccolies like this... Subscribe to DB! ★★ I will guess your age! This is a crazy math trick that is likely to impress you and your friends too! You

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### Can You Solve The Chameleon Riddle?

402 views / 0 likes - added

A museum has 13 blue, 15 red, and 17 green chameleons. Whenever two chameleons of different colors meet, they both change into the color of the other chameleon (if blue and red met, for example, they would both turn green). As the chameleons mingle, is it

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What is the expected number of coin flips until you get two heads in a row (HH)? What is the expected number of coin flips until you get a heads followed by a tails (HT)? The video presents the solution and an intuitive explanation for this probability ri

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Train your logic with these 16 short and fun riddles for kids :) Solving tricky riddles for 20 minutes a day makes you smart and more attentive to the details! These awesome riddles with answers will improve your logic and increase your brain power! So be

• 02:57

458 views / 1 likes - added

This problem has over 2 million comments on Facebook and is getting coverage in mainstream media and blogs. Can you figure out this Facebook fruit algebra puzzle involving apples, bananas, and coconuts? The video presents what many people consider to be t

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### FOG: Clearing up the confusion

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What is fog exactly? How does a plane land in zero visibility? UPS meteorologist Jeff Peters steers us through the facts and clever solutions. Follow TED Institute on Twitter @TEDPartners Subscribe to our channel: https://www.youtube.com/user/TEDInstitute

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### Can You Solve The 3 Cards Riddle?

309 views / 0 likes - added

There are 3 cards in this problem. One card is blue on both sides, another is red on both sides, and the last is red on one side and blue on the other. The cards are put in a bag and I pick one at random. Without looking at the colors on the card, I place

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### How Logical Are You? The Irrationality Illusion Tricks Most

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This video relates a cognitive bias ("irrational" decision) to an optical illusion (picture at 1:45). For more, check out my new book, "The Irrationality Illusion: How to Make Smart Decisions And Overcome Bias" http://amzn.to/1o3FaAg Blog post (text and i

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208 views / 0 likes - added

Some more word problems

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### How Many Cars Can Fit In The Parking Lot

410 views / 0 likes - added

Word problems.

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### The Day After Tomorrow Is Yesterday Riddle. Can You Solve It?

321 views / 0 likes - added

This puzzle is popular on Facebook and many other sites. "When the day after tomorrow is yesterday, then today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What day is today?" Can you solve this tri

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### This SAT Math Question Has A Mistake

291 views / 0 likes - added

This question appeared on the October 1980 SAT exam. Like all questions, it was supposed to have exactly one correct answer. However the test-makers made a mistake. Can you figure out what they did wrong? Blog post (text explanation): http://wp.me/p6aMk-4

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### Can You Solve This Intelligence Test? Viral Facebook Puzzle

322 views / 0 likes - added

If 6 + 4 = 210, and 9 + 2 = 711, what is the rule to combine numbers? This "intelligence test" has been shared more than 3 million times on Facebook. On Twitter people claim solving it means you have an IQ of more than 150 (genius level). In this video I

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### When Is Christmas? Mentally Convert Date To Day Of The Week

259 views / 0 likes - added

January 1, 2016 is a Friday. When will Christmas be in 2016? What about Christmas in 2055? You can do this in your head! Blog post (text explanation): http://wp.me/p6aMk-4qQ Doomsday Rule (previous video): https://www.youtube.com/watch?v=UsStBxY9STw Calcu

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Some 2-step word problems.

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### SAT Prep: Test 7 Section 8 Part 2

322 views / 0 likes - added

Problems 7-9 on page 805

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Problems 1-4 starting on page 1

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### SAT Prep: Test 3 Section 8 Part 2

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Problems 7-9 page 549

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### Quantum Eraser Lottery Challenge | Space Time | PBS Digital Studios

414 views / 0 likes - added

Matt challenges you to use quantum physics to win the lottery. Are you up to the task? Previous Episode on Quantum Eraser https://www.youtube.com/watch?v=8ORLN_KwAgs Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Faceb

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### "Impossible" Logic Puzzle - How Many Liars Are At The Party?

359 views / 0 likes - added

A party has 100 people who are either liars are truth tellers. Liars always lie and truth tellers always say the truth. After the party you ask each person, "How many truth tellers did you shake hands with?" Each person gives a different answer from 0 to

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Problems 1-5 starting on page 487

• 08:59

### SAT Prep: Test 2 Section 9 Part 2

271 views / 0 likes - added

Problems 6-9 starting on page 488

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### SAT Prep: Test 4 Section 2 Part 1

304 views / 0 likes - added

Problems 1-6 starting on page 582

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### SAT Prep: Test 6 Section 7 Part 1

333 views / 0 likes - added

Problems 1-5 starting on page 733

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319 views / 0 likes - added

Some final 4 digit subtraction problems.

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### SAT Prep: Test 5 Section 7 Part 1

360 views / 0 likes - added

Problems 1-5 starting on page 669

• 09:28

### SAT Prep: Test 6 Section 7 Part 2

346 views / 0 likes - added

Problems 6-9 starting on page 734

• 09:02

### SAT Prep: Test 7 Section 8 Part 1

314 views / 0 likes - added

Problems 1-6 starting on page 803

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### SAT Prep: Test 1 Section 9 Part 1

272 views / 0 likes - added

Problems 1-4 starting on page 423

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### SAT Prep: Test 5 Section 7 Part 2

333 views / 0 likes - added

Problems 6-9 starting on page 670

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### SAT Prep: Test 1 Section 9 Part 2

261 views / 0 likes - added

Problems 5-8 starting on page 424

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295 views / 0 likes - added

Problems 1-5 starting on page 518

• 09:48

### SAT Prep: Test 6 Section 9 Part 1

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Problems 1-6 starting on page 743

• 09:58

### SAT Prep: Test 1 Section 3 Part 2

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Problems 4-7 starting on page 396

• 08:39

### SAT Prep: Test 2 Section 3 part 1

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Problems 1-4 starting on page 459

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