The Four 4s - Numberphile (for the math nerds amongst us)
Say you've got four 4s -- 4, 4, 4, 4 -- and you're allowed to place any normal math symbols around them. How many different numbers can you make? Apparently you can make all of them. Just watch the vid...
People who liked this video also liked
12 comments posted so far. Login to add a comment.