The Missing Dollar Riddle
Kevin explores the math and mystery behind a classic riddle that just… doesn’t make sense. Three friends go out to lunch and split a $30 bill evenly. Each pays ten bucks. Then the waitress realizes the bill should’ve been only $25.
She gives the busboy a $5 refund, but he can’t figure out how to evenly divide five dollars three ways. The customers don’t even know they’ve been overcharged, so he just takes a $2 tip for himself and hands the three customers one dollar each.
If the customers only paid $9 each for lunch and the busboy pocketed $2, where is the missing dollar?!?
Walkingame’s Tutor’s Assistant: https://archive.org/details/walkingamesarit00walkgoog/page/n174
***********
Vsauce2 Links
Twitter: https://twitter.com/VsauceTwo
Facebook: https://www.facebook.com/VsauceTwo
Hosted, Produced, And Edited by Kevin Lieber
Instagram: http://instagram.com/kevlieber
Twitter: https://twitter.com/kevinlieber
Website: http://kevinlieber.com
Research And Writing by Matthew Tabor
https://twitter.com/matthewktabor
Huge Thanks To Paula Lieber
https://www.etsy.com/shop/Craftality
Get Vsauce's favorite science and math toys delivered to your door!
https://www.curiositybox.com/
Special Thanks Eric Langlay
https://www.youtube.com/c/ericlanglay
Select Music By Jake Chudnow: http://www.youtube.com/user/JakeChudnow
MY PODCAST -- THE CREATE UNKNOWN
https://www.youtube.com/thecreateunknown
Other Videos By Vsauce2
2019-07-17 | The Infinite Money Paradox |
2019-06-24 | The Nugget Algorithm |
2019-05-28 | The Game You Win By Losing (Parrondo's Paradox) |
2019-05-13 | The 100 Prisoners Puzzle |
2019-04-22 | The Game That Never Ends |
2019-04-08 | 1,000 Birds In A Truck Riddle |
2019-03-25 | The Game You Quit |
2019-03-18 | The Game That Learns |
2019-02-25 | A Problem You'll Never Solve |
2019-02-04 | MrBeast's $1,000,000 Dilemma |
2018-12-20 | The Missing Dollar Riddle |
2018-12-18 | The Birthday Paradox |
2018-11-27 | Ant On A Rubber Rope Paradox |
2018-10-25 | My Podcast -- The Create Unknown (ANNOUNCEMENT) |
2018-10-12 | The Martingale Betting Problem |
2018-10-01 | Double Sixes Death Game |
2018-09-17 | A Game You Can Never Win |
2018-06-06 | The Pizza Theorem |
2018-05-14 | A Game You Can Always Win |
2018-04-24 | What Is A Paradox? |
2018-03-26 | The Potato Paradox |