13:14

When f(x) = f(a-x)

9:42

(n-1)!+1 = n^2

12:16

Math secret your teacher won't tell you

13:53

Math Antics - Number Patterns

18:46

A System of Prime Equations

12:01

a+b+c+d+e = abcde

14:22

Solve 2 to the x = 9 , what is x=? Can you solve this type of Algebra Equation?

18:35

The Basel Problem