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Exam Questions Papers - Engineering

Q1:

Using 4-bit numbers (n = 4) if k = 00112, how is k expressed in 2's complement?

A 10112

B 11012

C 11002

D 01012

ANS:B - 11012

In 2's complement k + 11012 = 2n = 16 So -k is represented by 11012 .