Math

This is a fun little geometry problem. Source Bilal Sarımeşeli tweet #math #geometry #teachertwitter #questiontime Find the radius of the circle. pic.twitter.com/C1l5P2iAvN — Bilal Sarımeşeli M.Sc & M.Ed (@bilalsarimeseli) September 26, 2019 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
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This is a nice little logic puzzle from Terry Stickels! Books by Terry Stickels (including “Contemporary Brainteasers”) http://www.terrystickels.com/books.html 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. You can search for animation software tutorials on
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Learn the trick to this challenging algebra problem. Thanks to Ritwick in India for suggesting this problem! It comes from an IIT JEE sample paper (the JEE tests are used for admission into India’s prestigious IIT colleges). Reference https://socratic.org/questions/how-do-you-solve-6-x-4-x-9-x 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
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People around the world have asked me this and similar problems. Learn how to solve using only geometry (and a little bit of algebra). There are many other ways to solve the problem too https://www.mathalino.com/reviewer/plane-geometry/02-area-common-arcs-quarter-circles 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
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Professor Edward Frenkel discusses the mathematics behind the NSA Surveillance controversy – see links in full description. More links & stuff in full description below ↓↓↓ More from this interview: http://youtu.be/1O69uBL22nY Professor Frenkel’s book (Love & Math): http://bit.ly/loveandmath The NIST document: http://bit.ly/NIST_numberphile More encryption from Numberphile RSA: http://youtu.be/M7kEpw1tn50 Enigma: http://youtu.be/G2_Q9FoD-oQ Professor Edward Frenkel: http://bit.ly/Frenkel_Numberphile IF
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On the JEE Advanced test, you would only have minutes to solve this problem. Students preparing for the exam often take coaching to prepare. In this video I want to focus on the mathematical content of this beautiful problem. A special thanks this month to The Laba Family, Michael Anvari, Richard Ohnemus, Shrihari Puranik, Kyle.
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Partitions are a major part of the Ramanujan story (as shown in the new film about his life) – but what are they? More links & stuff in full description below ↓↓↓ Dr James Grime tackles the issue. Extra footage: https://youtu.be/ksHqQW94KlE More James Grime on Numberphile: http://bit.ly/grimevideos Young Tableau: https://youtu.be/vgZhrEs4tuk Shuffling: https://youtu.be/AxJubaijQbI James discusses Good
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Can you solve this logic puzzle? Source Here is this week's Maths Problem. If you think you have got the answer come and share it with Mr Shilvock or Mr Maereka. Good luck. #MansheadCEAcademy #Mathematics pic.twitter.com/joEHzPhO79 — MANSHEAD MATHS (@MansheadMaths) September 29, 2019 Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Send me suggestions by email (address in video). I consider
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See more links about the dice in the full description below… More links & stuff in full description below ↓↓↓ Extra footage at Numberphile2: https://youtu.be/pCCtcqyazOE Check Henry’s book about 3D printing math: http://amzn.to/2cWhY3R More about dice designs: http://bit.ly/AboutDice Buy these dice and others at: http://bit.ly/DiceLabDice Some dice are also available from our UK friends at
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Is it possible to find the area of the two squares? If no explain why not. If yes, then calculate the answer! This problem is all about the Gougo theorem (勾股定理), which you might have learned by another name. Sources https://math.stackexchange.com/questions/3365745/two-side-by-side-squares-are-inscribed-in-a-semicircle-the-diameter-of-the-semi https://www.rediff.com/news/special/did-india-discover-pythogoras-theorem-a-top-mathematician-answers/20150109.htm https://www.livemint.com/Opinion/d3ddePsFMHKZhHLmx1jAxL/The-men-who-knew-infinity-Indias-lost-history-of-mathemati.html Nèstor Abad solution to puzzle Inscribed angle – central angle pic.twitter.com/Jmzh8my2IM —
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Infographics are not new.. in 1862 Charles Joseph Minard created a much-praised infographic depicting Napoleon’s invasion of Russia in 1812. More links & stuff in full description below ↓↓↓ This video features Dr James Grime – http://singingbanana.com More of James on Numberphile: http://bit.ly/grimevideos Here is the info graphic: http://en.wikipedia.org/wiki/File:Minard.png A book coming soon about the
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This problem was given to 14 year old students in Hong Kong. Thanks to Yale for suggesting the problem! 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! Why are some comments before the video is published? Get early access and support the channel on Patreon
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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
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Thanks to Pedro in Argentina for suggesting this! The problem is adapted from the TESBA test. It’s a fun one! Sources https://en.wikipedia.org/wiki/Argentina#/media/File:Flag_of_Argentina.svg https://en.wikipedia.org/wiki/Argentina#/media/File:Argentina_orthographic.svg http://www-news.uchicago.edu/releases/98/980417.calderon.shtml 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! Why are some comments before the video is published? Get early access and
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The number 1/999,999,999,999,999,999,999,998,999,999,999,999,999,999,999,999 has the Fibonacci numbers in order for every group of 24 decimals. This video explains why the pattern emerges. (sources, proofs, and links below) Via Futility Closet: http://www.futilitycloset.com/2015/06/28/made-to-order-4/ WolframAlpha verification: http://www.wolframalpha.com/input/?i=1%2F999%2C999%2C999%2C999%2C999%2C999%2C999%2C998%2C999%2C999%2C999%2C999%2C999%2C999%2C999%2C999+to+2784+decimal+places Pingala described the Fibonacci sequence 1,000 before: https://www.youtube.com/watch?v=gTQeVlDsAi0 Blog post: http://mindyourdecisions.com/blog/2015/07/08/why-does-this-fraction-generate-the-fibonacci-numbers-in-order/#.VZyYiflVhBc “A Magic Trick from Fibonacci” by James Smoak and Thomas
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In the past 5 months, all of Mark Rober’s videos have been #1 trending on YouTube. He put his success in perspective by analogy to a statistical experiment of flipping coins. Some people pointed out the calculation wasn’t quite correct, so I thought it would be a great topic for a video. Mark Rober tweet
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This is a tricky geometry problem with an elegant solution! Sources Adapted from past SEAMO problem (emailed to me) Cut The Knot similar problem https://www.cut-the-knot.org/proofs/swivel.shtml Quote A Technique is Just a Trick That Went Viral Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Playlist to watch all videos on MindYourDecisions: https://www.youtube.com/playlist?Subscribe https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Click to watch all my videos! Send me suggestions by
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A quick little problem from Cliff Stoll, who baked a birthday cake for Brady… More links & stuff in full description below ↓↓↓ A trilogy of mathematical cake cutting videos… http://bit.ly/CakeCuttingTrilogy See more Cliff videos: http://bit.ly/Cliff_Videos The scientific way to cut a cake… https://youtu.be/wBU9N35ZHIw Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile
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No calculators allowed! This is a pretty fun one to work out. Thanks to all patrons! Special thanks to: Ertugrul Oruç, Michael Anvari, Richard Ohnemus, Shrihari Puranik, Kyle. Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Playlist to watch all videos on MindYourDecisions: https://www.youtube.com/playlist?Subscribe https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Click to watch all my videos! Send me suggestions by email (address in video). I consider
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Many tests around the world include a problem like this. How can you calculate this quickly, without making any mistakes? Thanks to all patrons! Special thanks to: Ertugrul Oruç, Michael Anvari, Richard Ohnemus, Shrihari Puranik, Kyle. Source BAPEX Math Problem of Week 📊 Sustain the ability to stay on a practice question, for hours if
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Acclaimed mathematician John H. Conway speaks about the mystery he’d most like to solve. More links & stuff in full description below ↓↓↓ Monster Group video: http://youtu.be/jsSeoGpiWsw More John Conway videos, including Game of Life stuff: http://bit.ly/JohnConway 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
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Featuring Neil Sloane from the OEIS. Full “Amazing Graphs Trilogy” and extras at: https://www.youtube.com/playlist?list=PLt5AfwLFPxWLkoPqhxvuA8183hh1rBnGM More links & stuff in full description below ↓↓↓ Neil Sloane is founder of the OEIS: https://oeis.org More videos with Neil: http://bit.ly/Sloane_Numberphile Amazing Graphs Part 1: https://youtu.be/pAMgUB51XZA Part 2: https://youtu.be/o8c4uYnnNnc Part 3: https://youtu.be/j0o-pMIR8uk Extra Bit: https://youtu.be/4x2kdLFUSvM Sequences featured in this video
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Can you estimate the log of 3 to the base of 2 without using a calculator? This kind of skill is actually pretty important in university mathematics. Watch the video to learn how to solve it! Source https://www.quora.com/How-do-you-solve-this-question-from-Oxfords-Math-Admissions-Test-No-calculators Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Playlist to watch all videos on MindYourDecisions: https://www.youtube.com/playlist?Subscribe https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Click to watch all my videos!
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A triangle with sides of 4, 3, and 5 is drawn inside a square as shown. What is the length of the square’s side? It’s a fun little geometry problem! Sources View this post on Instagram #mathematics⁩ ⁦‪#satexam‬⁩ ⁦‪#actexam‬⁩ ⁦‪#mathteacher‬⁩ ⁦‪#teachmath‬⁩ ⁦‪#study‬⁩ ⁦‪#riddle‬⁩ ⁦‪#thinking‬⁩ ⁦‪#learning‬⁩ ⁦‪#yks‬⁩ ⁦‪#test‬⁩ ⁦‪#gercekboss‬⁩ ⁦‪#eylemmath‬⁩ ⁦‪#gercekboz‬⁩ ⁦‪#highschool‬⁩ ⁦‪#geometry‬⁩ ⁦‪#calculus‬⁩ ⁦‪#algebra‬⁩ ⁦‪#stem‬⁩
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