The Massive Number 11 Trick #shorts
Vsauce2
Feb 18, 2022 20:59
Create an account to hide videos, mark them watched, or save them to Don't Miss.
Create an account to hide videos, mark them watched, or save them to Don't Miss.
Create an account to hide videos, mark them watched, or save them to Don't Miss.
You can take any number with 2 or more digits and determine almost instantly whether it's divisible by 11, and the method is actually really, really easy -- even for a number like 2,399,317,565,387,204.
All it takes is simple addition and alternating between the odd and even digits. If the difference between the two sums is 0 or a number that's divisible by 11, then the entire number is divisible by 11. It's that easy.
Think about it with a 2-digit number like 33. The difference between the first digit (3) and the second digit (3) is 0, and 33 is obviously divisible by 11. 121? (1 + 1) = 2, and the even digit is also 2 -- 121 is divisible by 11. Try this with a number that has... 137 digits. GO.
#shorts
Education
#vsauce
#vsauce2
#vsause
#vsause2
#math magic
#math short
#math trick
#math riddles
#brain teasers
#math puzzle
#random games
#game theory
#mind blowing
#vsauce2 game
#ant on a rubber rope vsauce
#surviving the deadliest game
#game you quit
#what is a paradox
#vsauce2 paradox
#vsauce2 birthday paradox
#math paradox
#probability games
#brain teasers for kids
#brain teaser puzzles
#brain teasers math
#math puzzles for kids
#math games
#math caught a serial killer