ISRO | ISRO CS 2015 | Question 2

The range of integers that can be represented by an n bit 2’s complement number system is:
(A) – 2^{n – 1} to 2^{n – 1} – 1
(B) – (2^{n – 1} – 1) to (2^{n – 1} – 1)
(C) – 2^{n – 1} to 2^{n – 1}
(D) – (2^{n – 1} + 1) to (2^{n – 1} – 1)

Answer: (A)
Explanation: In 2’s complement numbers, the range of integers are from -2^n-1 to 2^n-1 – 1
Option (A) is correct.
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