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Arithmetic Operations and Circuits

Q1:

Adding the two's complement of –11 + (–2) will yield which two's complement answer?

A 1110 1101

B 1111 1001

C 1111 0011

D 1110 1001

ANS:C - 1111 0011

for (11) --> 1011
1's Com (11) --> 0100
2's Com (11) --> 0101

for (2) --> 0010
1's Com (2) --> 1101
2's Com (2) --> 1110

Add 2's Comp (11) & (2)
0101 + 1110 --> 10011 --> last digit carry so eliminate -->0011

for negative sign we can use 1.
so the ans is
1111 0011



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