Electronics and Communication Engineering - Exam Questions Papers - Discussion

Discussion Forum : Exam Questions Papers - Exam Paper 10 (Q.No. 23)
23.
The two numbers represent in signed 2's complement form are P = 11101101 and Q = 111001110. If Q subtracted from P, the value obtained in signed 2's complement form is
100000111
00000111
11111001
111111001
Answer: Option
Explanation:

P = 11101101 = - 25

Q = 11100110 = - 18

Thus P - Q = - 25 - (- 18) = - 7

Thus '- 7's two complement representation is 11111001.

Discussion:
1 comments Page 1 of 1.

Pavan Satya Sai said:   2 years ago
The answer is B.

P = 11101101 = -19.
Q = 11100110 = -26.
P - Q = (-19)-(-26) = -19+26 = (7) base 10 = 00000111 base 2.

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