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On addition of +38 and -20 using 2’s complement, we get ____________

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On addition of +38 and -20 using 2’s complement, we get ____________

(a) 11110001

(b) 100001110

(c) 010010

(d) 110101011

The question was asked in examination.

This intriguing question comes from 1’s, 2’s, 9’s & 10’s Complements in division Number System and Codes of Digital Circuits

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The correct option is (c) 010010

Explanation: Steps for Binary Addition Using 2’s complement:

-> The 2’s complement of the addend is found out and added to the first number.

-> The result is the 2’s complement of the sum obtained.

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