1. What is the 8-bit 2s complement representation of a number which is represented as 81₁₆ in 8-bit sign-magnitude integer representation?

a. FF₁₆

b. 18₁₆

c. 11₁₆

d. Cannot be determined

2. What is 3B₁₆ + AB₁₆ in 8-bit sign-magnitude representation?

a. DB₁₆

b. 10₁₆

c. 2B₁₆

d. Cannot be determined

3. Overflow will occur when adding two in 2s compliment, if

a. the signs of the operands are different

b. there is a carry-out from the MSBs

c. the signs of the operands are same, and there is a carry-out from the MSBs

d. the signs of the operands are same, but the sign of the result is different