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What is the decimal number representation of the binary number `(11101.001)_(2)`?

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What is the decimal number representation of the binary number `(11101.001)_(2)`?
A. `30.125`
B. `29.025`
C. `29.125`
D. `28.025`
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Correct Answer - C
`11101.001`
`=1xx2^(4)+1xx2^(3)+1xx2^(2)+0xx2^(1)+1xx2^(0).0xx2^(-1)+0xx2^(-2)+1xx2^(-3)`
`=(16+8+4+0+1).(0+0+(1)/(8))=29.125`
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