Question

Which of the following numbers is divisible by 6?

A. 342 543
B. 322 222
C. 415 642
D. 123 456​

Answer 1

To be divisible by 6 it must be even and have a digit sum divisible by 3
A. 342 543 is odd
B. 322 222 is even but the digits add to 13 which is not a multiple of 3
C. 415 642 is even but the digits add to 22 which is not a multiple of 3
D. 123 456 is even and the digits add to 21 so it is a multiple of 6
123 456 / 6 = 20 576 with no remainder