Tree Gaps and Orchard Problems - Numberphile
15:13
The Golden Ratio (why it is so irrational) - Numberphile
18:36
Game of Cat and Mouse - Numberphile
27:31
Divisibility Tricks - Numberphile
33:06
The Math of Being a Greedy Pig - Numberphile
13:25
Impossible Squares - Numberphile
18:20
Gabriel's Horn Paradox - Numberphile
32:09
Do Aliens Exist? Professor Brian Cox Answers Your Questions | Honesty Box
17:24