Question

Convert the binary number to decimal number
${1111}_2$:

Answer 1

Given ${1111}_2$

$1111=(1\times 2^3)+(1\times 2^2)+(1\times 2^1)+(1\times 2^0)$

$=8+4+2+1$

$=15$

Decimal number of ${1111}_2$ is ${15}_{10}$