How Can This Be True?
20:03
3 to (x/2) = 12, many don’t know where to start
17:54
The Algebra Step that EVERYONE Gets WRONG!
18:11
A tricky problem from Harvard University Interview
14:22
Solve 2 to the x = 9 , what is x=? Can you solve this type of Algebra Equation?
5:05
How to Calculate Faster than a Calculator - Mental Math #1
25:11
A Sudoku With Only 4 Given Digits?!
4:54
End Result Will Shock You!!
18:10