A problem is given to three persons P, Q, R whose respective chances of solving it are 2/7, 4/7, 4/9 respectively. What is the probability that the problem is solved?
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Probability of the problem getting solved = 1 – (Probability of none of them solving the problem)
Probability of problem getting solved = 1 – (5/7) x (3/7) x (5/9) = (122/147)
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Mathematics