Question

If k is divisible by 2, 3, and 21, which of the following is also divisible by these numbers?

Answer 1

do you have options? the number 2*3*21=126 is also divisible by these three numbers

Answer 2

their are 3 multiple chocie answers k+21, k+42, k+63, and k+121

Answer 3

the number added to k must be divisible by 2, 3 and 21
k+21, 21 is nt divisible by 2
same for 63 and 121, but 42 is divisible by 2, 3 and 21

Answer 4

you could also solve this replacin k by 126 and see if the sum is divisible by the three numbers