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Electronics and Communication Engineering (ECE) : Digital Electronics - Quiz(MCQ)
In 2's complement representation the number 11100101 represents the decimal number
A)
-31
B)
+37
C)
-27
D)
+27

Correct Answer : Option (C) :   -27


Explanation : A = 11100101. Therefore A = 00011010 and A' = A + 1 = 00011011 = 16 + 8 + 2 + 1 = 27. Therefore A = -27.

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