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UGC NET CSE | January 2017 | Part 2 | Question: 15

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Answer A)

Consider 

X = $2^2 = 4$
X = 0100
X-1 = $3$
X-1 = 0011
X & (X-1) = 1111

Consider

X = $2^3 = 8$
X = 1000
X-1 = $7$
X-1 = 0111
X & (X-1) = 1111

So, Ans A) 11...11

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