# Find the missing number from the pyramid

         ?
1   3
3   3   9
9   3   1   9


Find the missing number in the pyramid?

3

Solution:

Divide the larger of the two numbers in the cells below by the smaller of the 2 numbers.

 Original Pyramid  |     Calculations
|
?         |         3/1
1   3       |      3/3   9/3
3   3   9     |   9/3   3/1   9/1
9   3   1   9   |  9    3     1     9