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The decimal representation of the number `(1011)_(2)` in binary system is:

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The decimal representation of the number `(1011)_(2)` in binary system is:
A. 5
B. 7
C. 9
D. 11
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Correct Answer - D
`(1011)_(2)=2^(3)xx1+2^(2)xx0+2^(1)xx1+2^(0)xx1`
`=8+0+2+1=(11)_(10)`
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