Math

Here are more pics of the doodle: http://bit.ly/Doodle_Images More links & stuff in full description below ↓↓↓ And make sure you subscribe to Objectivity: https://www.youtube.com/c/objectivityvideos Thanks to Keith Moore at the Royal Society – https://royalsociety.org Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Numberphile is supported

Thanks to Moaaz for the suggestion! Can you solve this challenging geometry problem? 0:00 Problem 0:55 Solution 1 3:09 Solution 2 Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for

If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions Connect on social media. I update each site when I have a new video or blog post, so you can follow me on whichever method is most convenient for you. My Blog: http://mindyourdecisions.com/blog/ Twitter: http://twitter.com/preshtalwalkar Facebook: https://www.facebook.com/pages/Mind-Your-Decisions/168446714965 Google+: https://plus.google.com/108336608566588374147/posts Pinterest: https://www.pinterest.com/preshtalwalkar/ Tumblr: http://preshtalwalkar.tumblr.com/

Ben Sparks shows us a simple problem that takes some fascinating twists. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ More videos with Ben Sparks: http://bit.ly/Sparks_Playlist Catch a more in-depth interview with Ben on our Numberphile Podcast: https://youtu.be/-tGni9ObJWk Ben’s website: https://www.bensparks.co.uk Numberphile is

This is said to be one of the hardest ACT math questions. In the equation x^2+mx+n=0, m and n are integers. The only possible value for x is -3. What is the value of m? #math #maths #mathematics #shorts References https://onlyphysics.org/the-5-hardest-act-math-questions-ever/ https://www.quora.com/In-the-equation-x%C2%B2-mx-n-0-m-and-n-are-integers-The-only-possible-value-for-x-is-3-What-is-the-value-of-m https://brainly.in/question/16637042 Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many

Get your first audiobook free with an Audible 30-day trial. Go to http://www.audible.com/numberphile or text numberphile to 500 500. More links & stuff in full description below ↓↓↓ This video features Edmund Harriss from University of Arkansas. Extra footage from this interview: https://youtu.be/7ehaadVtaMI Heesch’s Tiling Problem by Casey Mann: http://faculty.washington.edu/cemann/Heesch.pdf Check out the Numberphile Podcast:

This problem seems like it is impossible to solve because it does not have enough information. If the rectangle has an area of 10, what is the area of the triangle? After posting the video, I was told 2001 AMC 12 problem 22 was nearly the same problem: https://artofproblemsolving.com/wiki/index.php/2001_AMC_12_Problems/Problem_22 Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by

Dr James Grime and a handy trick for checking calculations. Ditch the nines… More links & stuff in full description below ↓↓↓ Some extra footage from this interview: https://youtu.be/wQsQ8joretY Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone

A number of galactic proportions… See more #MegaFavNumbers on this playlist – https://bit.ly/MegaFavNumbers – and read below to contribute your own. More links & stuff in full description below ↓↓↓ See our full collection of video on the sum of three cubes at: http://bit.ly/SumOfCubes (*) the cube (which we depicted quite loosely and artistically, of

Some say only geniuses can solve this one. The video presents a sentence and asks you to identify all of the five errors. Can you figure it out? It is a tricky but I think many of you are clever enough to figure it out. My blog post for this video: https://wp.me/p6aMk-5iC If you like

Tech companies like Google have asked this question during interviews. A cat is hiding in one of five boxes that are lined up in a row. The boxes are numbered 1 to 5. Each night the cat hides in an adjacent box, exactly one number away. Each morning you can open a single box to

George Dantzig, William Sidis, Srinivasa Ramanujan? Who was the real Good Will Hunting? More links & stuff in full description below ↓↓↓ Maths in Good Will Hunting: http://www.youtube.com/watch?v=iW_LkYiuTKE This video features Numberphile’s very own mathematics superstar – Dr James Grime. NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady

James Grime on the Hadwiger–Nelson problem. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) Extra footage from this interview: https://youtu.be/7nBtRKvUox4 The Four Color Map Theorem: https://youtu.be/NgbK43jB4rQ More on James Grime (you can book him for talks): http://singingbanana.com More James Grime videos: http://bit.ly/grimevideos The de Grey paper: https://arxiv.org/abs/1804.02385 A good write up on

The Braess Paradox is an unexpected result from network theory. It states that adding capacity could actually slow down the speed of the network. Applied to highways, the Braess Paradox means the existence of some roads slows down traffic, or that closing some roads could speed up traffic. The Braess Paradox can also explain the

Continuing on from Zvezda’s previous video about Ptolemey’s Theorem (see: https://youtu.be/bJOuzqu3MUQ) now we use it to prove some cool stuff with pentagons and equilateral triangles. More links & stuff in full description below ↓↓↓ Zvezda’s Numberphile playlist: http://bit.ly/zvezda_videos Zvezda’s webpage: https://math.berkeley.edu/~stankova/ Golden Ratio: https://youtu.be/sj8Sg8qnjOg Epic Circles: https://youtu.be/sG_6nlMZ8f4 Triangle Magic Highway: https://youtu.be/wVH4MS6v23U Numberphile is supported by

Can you solve this tricky question? #maths #math #mathematics #shorts Hardest GCSE maths questions list (Edexcel June 2018 Higher Paper 1 – Question 6) Top 10 Hardest GCSE Maths Questions in 2024 Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas!

You can solve this in seconds with logic. #math #maths #mathematics #shorts References https://thecollegepanda.com/12-tricky-sat-math-questions/ https://brainly.com/question/13082487 https://artofproblemsolving.com/wiki/index.php/2003_AMC_10B_Problems/Problem_15 Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for purchases made on Amazon. As

Persi Diaconis (Stanford University) on card shuffling. See full description for links to additional videos and detailed papers. More links & stuff in full description below ↓↓↓ EXTRAS FROM THIS INTERVIEW — 1/3: https://youtu.be/1jfm42Qd7Qw — 2/3: http://youtu.be/c_Hunaf0tWw — 3/3: http://youtu.be/RIGJH12vVCY Cards and shuffling videos: http://bit.ly/Cards_Shuffling PAPERS Trailing the Dovetail to its Lair (7 shuffles)): http://bit.ly/1xU6uPI

Can you solve this neat geometry puzzle? Thanks to Joe M. for the suggestion! Sources https://brilliant.org/practice/circle-properties-level-2-3-challenges/?problem=day-5-five-golden-circles&subtopic=circles&chapter=circle-properties How I’m Learning to Step into Math Problems Circle puzzle Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address in video). I consider all ideas though can’t always reply! Like many YouTubers I use popular software to prepare my videos.

A “progressive rock” experimental track heavily based on Pi and Tau… Support Alan by buying this track for just 99c – http://bit.ly/1fAtLjS More links & stuff in full description below ↓↓↓ With thanks to Phil Moriarty also. Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Numberphile

Did you know some math problems were used to discriminate against groups of people? This is one such problem, and it stumped me! But it has an unbelievably elegant solution. Take any equilateral triangle and pick a random point inside the triangle. Draw from each vertex a line to the random point. Two of the

I bought a cow for $800. I sold it for $1000. I bought it again for $1100. I sold it again for $1300. How much did I earn? This seemingly simple problem has sparked plenty of discussion online, and top search results are even showing the wrong answer. It’s time to present the correct answer.

Matt Parker discusses a problem involving Square Sums. Go deeper with extra footage: https://youtu.be/7_ph5djCCnM More links & stuff in full description below ↓↓↓ More Matt Parker on Numberphile: http://bit.ly/Matt_Videos Matt’s projects and other stuff: http://standupmaths.com This problem is discussed in Matt’s book: http://amzn.to/2mksdD5 Thanks to Charlie Turner – more from her in Part 2: https://youtu.be/7_ph5djCCnM

The Four Color Map Theorem (or colour!?) was a long-standing problem until it was cracked in 1976 using a “new” method… computers! A little bit of extra footage from this: https://youtu.be/laMkuPrad3s This video features Dr James Grime – http://jamesgrime.com More Grime videos: http://bit.ly/grimevideos This video supported by Squarespace: https://www.squarespace.com/numberphile Numberphile is supported by the Mathematical

Which method were you taught? #shorts #math #maths #mathematics Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for purchases made on Amazon. As an Amazon Associate I earn from qualifying

Explains this trick: http://youtu.be/pdqkrqHDF7g If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions Connect on social media. I update each site when I have a new video or blog post, so you can follow me on whichever method is most convenient for you. My Blog: http://mindyourdecisions.com/blog/ Twitter: http://twitter.com/preshtalwalkar Facebook: https://www.facebook.com/pages/Mind-Your-Decisions/168446714965 Google+: https://plus.google.com/108336608566588374147/posts

More Numberphile on Klein Bottles: http://bit.ly/KleinBottles More links & stuff in full description below ↓↓↓ Science objects with Brady: http://bit.ly/Objectivity Thanks Squarespace: http://squarespace.com/numberphile This video features Cliff Stoll, the man behind ACME Klein Bottles: http://bit.ly/ACME_Klein Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Numberphile is supported

I would not have solved this one. Credit to the genius who figured out the trick. #math #maths #mathematics #shorts [Calculus – Integration] Need help with this integral byu/W1ck3d_J0k3r_17391 inHomeworkHelp Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you

When Cliff Stoll sets your homework, there’s always an extra lesson. More links & stuff in full description below ↓↓↓ More Cliff videos: http://bit.ly/Cliff_Videos Cliff’s Klein Bottles: http://www.kleinbottle.com Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with

Rotating cedar balls. Here’s a playlist of Tadashi Tokieda videos: http://bit.ly/tadashi_vids More links & stuff in full description below ↓↓↓ Electric slide rule: https://youtu.be/MEyIppEOQTw Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos by Brady

This is a fun one from a UK maths competition. UKMT 2008 SMC solutions https://archive.ukmt.org.uk/pdfs/archive/SMC2008_sol_short.pdf Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for purchases made on Amazon. As an

Matt Parker shows off his Magic Square party trick (unlike magicians, mathematicians often reveal their secrets). More links & stuff in full description below ↓↓↓ More Magic Square videos: http://bit.ly/MagicSquareVideos Rubik’s Cube videos: http://bit.ly/rubiksvids More Matt on Numberphile: http://bit.ly/Matt_Videos A little extra bit for this video: https://youtu.be/zhB2AUNcsx0 Parker Square: https://youtu.be/aOT_bG-vWyg Parker Square T-Shirt: http://bit.ly/ParkerSquareTshirt Support

Thanks to Patrick from Germany for suggesting this problem! Students were supposed to solve it in less than 1 minute with no calculator. Special thanks this month to: Nida Davis, Richard Ohnemus, Shrihari Puranik, Kyle, Michael Anvari . Thanks to all supporters on Patreon! http://www.patreon.com/mindyourdecisions References 2018 Raytheon MATHCOUNTS National Competition (link includes timestamp around

Since the internet is perfectly logical, I’m sure everyone will solve this easily and there will be no arguments 🤣😂 #math #maths #logic #mathematics #shorts Source https://puzzling.stackexchange.com/questions/60009/the-knight-never-lies-the-knave-always-lies-and-the-spy-either-lies-or-tells-t Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these

Preston McAfee is the chief economist at Microsoft. More links & stuff in full description below ↓↓↓ Benford’s Law: https://youtu.be/XXjlR2OK1kM Preston McAfee: http://www.mcafee.cc Animation by Pete McPartlan Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile MSRI on Twitter: https://twitter.com/mathmoves We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to

Thanks to Abisheik for the suggestion! This is a fun little geometry problem. #math #maths #mathematics #shorts Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for purchases made on Amazon.

This is a nice conditional probability question adapted from an admissions test. #math #maths #mathematics #shorts IUT 2016-17 Admission Test MCQ 85 Conditional Probability and Multiple Choice https://admission.iutoic-dhaka.edu/assets/admission/2016-2017.pdf Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through

This is a nice one similar to questions on admissions tests. Adapted from IUT 2016-17 Admission Test MCQ 59 https://admission.iutoic-dhaka.edu/assets/admission/2016-2017.pdf https://gmatclub.com/forum/there-are-2-parallel-line-segments-ab-and-cd-in-a-plane-225512.html Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for

Sometimes infinity is even bigger than you think… Dr James Grime explains with a little help from Georg Cantor. More links & stuff in full description below ↓↓↓ Minute Physics video on this topic http://www.youtube.com/watch?v=A-QoutHCu4o (somewhat more fast-paced… but we did film ours BEFORE his was uploaded, so similarities are coincidental… well actually, no they

This is a math joke from Wikipedia’s article on mathematical fallacies: https://en.wikipedia.org/wiki/Mathematical_fallacy#Howlers Thanks to Jetx 47 for the reference to Wikipedia. #Shorts Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated

Johnny Ball discusses Archimedes and the volume of a sphere. Check out https://www.kiwico.com/Numberphile and get 50% off your first month of any subscription (sponsor) More links & stuff in full description below ↓↓↓ Johnny Ball: https://johnnyball.co.uk More Numberphile videos with Johnny Ball: http://bit.ly/Johnny_Ball Johnny Ball books: https://amzn.to/3v8Xxqx Numberphile is supported by the Mathematical Sciences Research

This is from a practice GMAT test. #math #maths #mathematics #shorts Credit https://gmatclub.com/forum/on-the-number-line-shown-above-the-tick-marks-are-equally-spaced-198106.html Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for purchases made on Amazon. As an Amazon Associate

Neil Sloane discusses peaceable queens and chess. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ Learn more at the OEIS entry (loads of links): https://oeis.org/A250000 References: Ainley, Stephen. Mathematical Puzzles. London: G Bell & Sons, 1977. Yukun Yao and Doron Zeilberger, Numerical and

This is said to be one of the hardest GRE math questions. #math #maths #mathematics #shorts References https://gre.myprepclub.com/forum/of-the-20-lightbulbs-in-a-box-2-are-defective-an-inspector-1859.html https://www.manhattanprep.com/gre/blog/hardest-gre-math-problems/ Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for purchases made

You have to think about this one. #math #maths #mathematics #shorts I honestly would have mindlessly solved the question myself without thinking. I’ve seen versions of this problem. I think this the link below the original video but do let me know if another video was earlier so I can provide proper credit: @your.bummy.math.tutor Can