Answer
$10001101_{2}$
Work Step by Step
115=64+32+16+2+1
=((0\times128)+(1\times64)+(1\times32)+(1\times16)+(0\times8)+(0\times4)+(1\times2)+(1\times1))
=01110011_{2}
=10001100_{2}
=10001101_{2}
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