Math

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
0 Comments
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
0 Comments
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
0 Comments
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
0 Comments
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
0 Comments
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
0 Comments
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
0 Comments
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
0 Comments
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
0 Comments
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
0 Comments
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!
0 Comments
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
0 Comments
It may not be exactly 99 percent, but many people will get the incorrect answer. It’s a great teaching opportunity. Learn how to solve this problem! (There are multiple ways, I am presenting one valid method). Previous video Source View this post on Instagram #mathematics‬⁩ ⁦‪#satexam‬⁩ ⁦‪#actexam‬⁩ ⁦‪#mathteacher‬⁩ ⁦‪#teachmath‬⁩ ⁦‪#study‬⁩ ⁦‪#riddle‬⁩ ⁦‪#thinking‬⁩ ⁦‪#learning‬⁩ ⁦‪#yks‬⁩ ⁦‪#test‬⁩
0 Comments
Part Two: http://youtu.be/LBPj8E1JKaQ Featuring Simon Pampena – https://twitter.com/mathemaniac More links & stuff in full description below ↓↓↓ 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 Haran Brady’s videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady’s latest
0 Comments
Signup for your free trial to The Great Courses Plus here: http://ow.ly/b5wA30hIviV (sponsor) More links & stuff in full description below ↓↓↓ James Grime on a proof involving Pythagorean Triples. James Grime: http://singingbanana.com (book him for a talk) More on the proof: https://www.cs.utexas.edu/~marijn/ptn/ Preprint of the paper: https://arxiv.org/abs/1605.00723 Ron Graham videos: http://bit.ly/Ron_Graham Numberphile is supported
0 Comments
What is the distance between towns A and B? Learn how to solve this mysterious problem–a similar problem was a question to quality for the US Math Olympiad! Sources Qbyte Nick’s mathematical puzzle, number 75 http://www.qbyte.org/puzzles/p075s.html AoPS 2017 AMC 10A, problem 9 (US Olympiad qualifying test) https://artofproblemsolving.com/wiki/index.php/2017_AMC_10A_Problems/Problem_9 Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Playlist to watch all videos on
0 Comments
This puzzle has been shared with dubious claims, but it is still a fun logic problem. Can you figure it out? Examples of puzzle and variants on social media sites Combination lock riddle from puzzles https://puzzling.stackexchange.com/questions/46871/crack-the-lock-code Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1 Playlist to watch all videos on MindYourDecisions: https://www.youtube.com/playlist?list=UUHnj59g7jezwTy5GeL8EA_g This is the only channel to feature math topics
0 Comments
This is adapted from a problem given to 14-16 year old students. Watch the video to learn how to solve it! Source (in Spanish) http://mimosa.pntic.mec.es/jcolon/pjanteriores3.html http://mimosa.pntic.mec.es/jcolon/soluciones3.html#3-14p27 “Learn Right, Not Rote.” Kalid Azad, BetterExplained (https://betterexplained.com/) 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
0 Comments
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:
0 Comments
Zsuzsanna Dancso trisects an angle using origami – follows on from this video about Euclidean geometry: http://youtu.be/6Lm9EHhbJAY More links & stuff in full description below ↓↓↓ Special thanks to the Patreon supporters listed below: Herschal Sanders (from Susan) Lê OK Merli Alex Bozzi Thomas J Petersen Spiked Math Filipe Junqueira Bill Shillito plusunim Micky Baeza
0 Comments
This is a fun little geometry problem! DataGenetics http://datagenetics.com/blog/november22016/index.html How to solve the shape-shifting triangle 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 all ideas! Get early access to my videos and support the channel on
0 Comments
Edmund Harriss introduces a very cool tiling and talks about Tribonacci Numbers. More links & stuff in full description below ↓↓↓ Numberphile Podcast: https://www.numberphile.com/podcast Or on YouTube: http://bit.ly/Numberphile_Pod_Playlist More Edmund on Numberphile: http://bit.ly/Ed_Harriss_Playlist Ed Harriss is online at http://maxwelldemon.com and on Twitter at https://twitter.com/gelada Papers relating to this video… Nombres algébriques et substitutions: http://archive.numdam.org/item/BSMF_1982__110__147_0/ Algebraic
0 Comments
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
0 Comments