Respuesta :

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