Arun can solve 90 % of the problems given in a book whereas amit can solve 70%. find the probability that at least one of them will solve the problem, selected at random from the book?
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probability of Arun to solve the problem=9/100=0.9 and probability of Amit to solve the problem=70/100=0.7
hence required probability=1-0.9*1-0.7
1-0.01=0.97
hence required probability=1-0.9*1-0.7
1-0.01=0.97
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