Question

111111.1111 to convert d desi mal​

Answer 1

Integer part

$1\cdot2^5+1\cdot2^4+1\cdot2^3+1\cdot2^2+1\cdot2^1+1\cdot2^0=32+16+8+4+2+1=63$

Fractional part

$1\cdot2^{-1}+1\cdot2^{-2}+1\cdot2^{-3}+1\cdot2^{-4}=\dfrac{1}{2}+\dfrac{1}{4}+\dfrac{1}{8}+\dfrac{1}{16}=\dfrac{8}{16}+\dfrac{4}{16}+\dfrac{2}{16}+\dfrac{1}{16}=\\=\dfrac{15}{16}=0.9375$

Therefore

$111111.1111_2=63.9375_{10}$