2- The last digit will be even

3 – the sum of the digits is a multiple of 3 (3654… 3 + 6 + 5 + 4 = 18 (a multiple of 3)

4 – the last 2 digits are a multiple of 4 (12364… 64 ÷4 = 16)

5 – the last digit will be 5 or 0

6 – the number is divisible by BOTH 2 & 3

9 – the sum of the digits is a multiple of 9

10 – the last digit will be 0

12 - the number is divisible by BOTH 3 & 4

15 - the number is divisible by BOTH 3 & 5