Question

Find the sum of odd two digit numbers divisible by 3

Answer 1

If the units place is even, the number is divisible by 2 e.g. 102, 10, 8, 98. If the sum of the digits of a number is divisible by 3 or 9, then and only then the number is divisible by 3 or 9. For example, 99, 492, 336 etc.