Question

Which one of these numbers isn't like the others?:21, 15, 6, 16, 27

Answer 1

16 because it isnt divisible by 3 like all the other numbers

Answer 2

If you want to know which one of the following numbers 21, 15, 6, 16, 27 isn't like the others, you can see it here:

21 / 3 = 7
15 / 3 = 5
6 / 3 = 2
16 ... you can't divide 16 by 3
27 / 3 = 9

So, the result would be 16.