Answer
73D
Work Step by Step
Use Table 16.4 to find equivalent values.
$11100111101_2=\underbrace{0111}\underbrace{0011}\underbrace{1101_2}=73D_{16}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 7\ \ \ \ \ \ \ 3\ \ \ \ \ \ \ \ D$