On subtracting +28 from +29 using 2’s complement, we get ____________(a) 11111010(b) 111111001(c) 100001(d) 1I had been asked this question in an interview.My question is from 1’s, 2’s, 9’s & 10’s Complements in portion Number System and Codes of Digital Circuits

On subtracting +28 from +29 using 2’s complement, we get ___________

1.	On subtracting +28 from +29 using 2’s complement, we get ____________(a) 11111010(b) 111111001(c) 100001(d) 1I had been asked this question in an interview.My question is from 1’s, 2’s, 9’s & 10’s Complements in portion Number System and Codes of Digital Circuits
Answer» Right choice is (d) 1 To explain I would say: Steps For SUBTRACTION USING 2’s complement are: -> 2’s complement of the subtrahend is determined and added to the minuend. -> If the result has a carry, then it is dropped and the result is positive. -> Else, if there is no carry, then 2’s complement of the result is FOUND out and a ‘-’ sign preceeds the result.

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