Question

My number is even.

It is a factor of 198 and a multiple of 9.
It is less than 100.
What is my number?

Answer 1

18

Explanation:

Look at all factors of 9 that are even; 18, 36, 54, 72, 90

Next divide 198 by those numbers and the only whole number is from 18.

9 x 2 = 18

198/18 = 11