Question

If the sum of the digits of a number is divisible by 3, then the number itself is divisible by 9. True or false? Why?

Answer 1

False if we take 12 then 1 + 2 = 3 which is not divisible by 9

Answer 2

False if we take 12 then 1 + 2 = 3 which is not divisible by 9