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Question 87Asked in DSSSB TGT Computer Science (Technical), 1 Aug 2021, Shift 3

A question in mathematics is given to three students P, Q and R whose chances of solving are 1/3, 1/4, 1/5 respectively. What is the probability that the…

A question in mathematics is given to three students P, Q and R whose chances of solving are 1/3, 1/4, 1/5 respectively. What is the probability that the problem will be solved?
  1. A0.4
  2. B0.6
  3. C0.8
  4. D0.7
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Correct answer: (B) 0.6

Explanation

P(no one solves) = (2/3)(3/4)(4/5) = 2/5. So P(solved) = 1 − 2/5 = 3/5 = 0.6.

From DSSSB TGT Computer Science PYQ (Technical), 1 Aug 2021, Shift 3

This is question 87 of DSSSB TGT Computer Science PYQ (Technical), 1 Aug 2021, Shift 3. 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.