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ISRO | ISRO CS 2007 | Question 33

Company X shipped 5 computer chips, 1 of which was defective and company Y shipped 4 computer chips, 2 of which were defective. One computer chip is to be chosen uniformly at a random from the 9 chips shipped by the companies. If the chosen chip is found to be defective, what is the probability that the chip came from the company Y?

(A)

2/9

(B)

4/9

(C)

2/3

(D)

1/2

Answer

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