Question :

Can you count the numbers of the ball in the famous ball pyramid puzzle?

Answer :

It appears to be a pyramid having a square base and four triangular sides. If so, it has layers of 16, 9, 4 and 1 balls, or 30 total.

4*4 =16

3*3=9

2*2=4

1 ball at the top

So 16 + 9 + 4 + 1 =30