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Discussion Forum

Que. Which of the following statement(s) is(are) not correct ?

i. The 2's complement of 0 is 0.
ii. In 2's complement, the left most bit cannot be used to express a quantity.
iii. For an n-bit word (2's complement) which includes the sign bit, there are 2^n-1 positive integers, 2^n+1 negative integers and one 0 for a total of 2^n unique states.
iv. In 2's complement the significant information is contained in the 1's of positive numbers and 0's of the negative numbers.
a. i and iv
b. i and ii
c. iii
d. iv
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