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Question 44

Which of the following expression results in zero?

  1. A(0+0+1)(0+0+1)
  2. B(0+0+0)(0+1+1)
  3. C(1+0+0)(1+1+1)
  4. D(0+1+0)(1+0+1)
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Correct answer: (B) (0+0+0)(0+1+1)

Explanation

In Boolean algebra, + is OR and · is AND. (0+0+0) = 0, so 0 · (0+1+1) = 0. Every other option has both factors equal to 1.

From DSSSB TGT Computer Science Practice Set 2

This is question 44 of DSSSB TGT Computer Science Practice Set 2. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.