JEE Advanced | 2013ProbabilityHard
Question
Four persons independently solve a certain problem correctly with probabilities 
Then the probability that the problem is solved correctly by at least one of them is
Then the probability that the problem is solved correctly by at least one of them is Options
A.
B.
C.
D.
Solution
P( Problem is solved by at least one of them) = 1 - P(solved by none)
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