Question

How to check if a number is a multiple of 3?

Answer 1

First, take any number (for this example it will be 492) and add together each digit in the number(4 + 9 + 2 = 15). Then take that sum (15) and determine if it is divisible by 3. The originalnumber is divisible by 3 (or 9) ifand only if the sum of its digits is divisible by 3 (or 9).