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7’s complement of 432 is _________________(a) 432(b) 543(c) 345(d) 777This question was posed to me in a national level competition.The question is from Complements in division Computer Arithmetic of Computer Fundamentals

Answer»

The correct option is (C) 345

For explanation: To find the 7’s complement of any NUMBER, we SIMPLY SUBTRACT 7 from each of the bits.

Here, 777-432=345. So, the 7’s complement is 345.



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