what are the binary representtations

Question

of the following decimal numbers?
17,29,38

Answer 1

17 = 2^4 + 2^0 = 10001
29 = 2^4 + 2^3 + 2^2 + 2^0 = 11101
or, it's 31-2 = 11101
38=32+4+2 = 100110