Which of the following doesn't belong?
64, 16, 36, 32, 8, 4
i don't understand this at brain is like everywhere today

36 does not belong in that group because it is the only number that is not a power of 2:

2^2 OR 2 x 2 = 4
2^3 OR 2 x 2 x 2 = 8
2^4 OR 2 x 2 x 2 x 2 = 16
2^5 OR 2 x 2 x 2 x 2 x 2= 32
2^6 OR 2 x 2 x 2 x 2 x 2 x 2= 64