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The subtraction using 1’s complement of 110 – 100 will give the result ___________

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The subtraction  using 1’s complement of 110 – 100 will give the result  ___________

(a) -011

(b) 011

(c) 010

(d) -010

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Asked question is from Complements in division Computer Arithmetic of Computer Fundamentals

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Right answer is (c) 010

The explanation is: To subtract using 1’s complement: Take the 1’s complement of the 2nd number (here, 011) and add it to the first number. (110+011=1,001).

If the carry is generated, it is added to the result (001+1=010).

If a carry is not generated then it is converted to its 1’s complement form.

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