Question

qual a representação de 15 na base 2

Answer 1

15 na base 10 para base 2 = 1111

Answer 2

$15_{10}=8+4+2+1\\ \\ 15_{10}=1\cdot 2^{3}+1\cdot 2^{2}+1\cdot 2^{1}+1\cdot 2^{0}\\ \\ 15_{10}=1111_{2}$