1.

The 10’s complement of 455 is _________(a) 543(b) 544(c) 545(d) 546I had been asked this question in an interview for job.This key question is from BCD topic in chapter Computer Codes of Computer Fundamentals

Answer» RIGHT choice is (C) 545

The best EXPLANATION: To OBTAIN the 10’s COMPLEMENT, we first obtain the 9’s complement and then add 1 to it.

999-455=544 (9’s)

544+1=545(10’s).


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