Apparently Short Division is a Thing
6:43
How Many Ways Can this be a Square?
12:11
Simple Explanation of the Birthday Paradox
13:33
How To Calculate Any Square Root
21:58
Group theory, abstraction, and the 196,883-dimensional monster
13:46
Can you solve Microsoft's bridge and torch riddle?
26:51
New divisibility rule! (30,000 of them)
18:48
The Unlikeliness of Numbers Sharing Factors
21:05