Question

The product of three consecutive whole numbers is 990. What is the sum of the three whole numbers ?

A. 30
B. 33
C. 63
D. 96

Answer 1

Start with the sum of 30.
Assume one number and start guessing.

Answer 2

hint:
three consecutive natural numbers are like these:
\[\large n,\quad n + 1,\quad n + 2\]
so your problem reads now:
\[\Large n \cdot \left( {n + 1} \right) \cdot \left( {n + 2} \right) = 990\]

Answer 3

For example:
Is 9 * 10 * 11 = 990?
If not, Make a new assumption, and test it.

Answer 4

For example: Is 8 * 9 * 10 = 990?
If not, make a new assumption, and test it.