ProbabilityHard
Question
The probability of defective screws in three boxes A,B,C are 
respectively. A box is selected at random and a screw drawn from it at random is found to be defective. Then the probability that it c ame from box A is-
respectively. A box is selected at random and a screw drawn from it at random is found to be defective. Then the probability that it c ame from box A is- Options
A.16/29
B.1/15
C.27/59
D.42/107
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