1.

A bag contains 3 maths book and 2 players book. A book is drawn at random if it is of math, 2 more book of maths together with this book put back in the bag and if it is of physics it is not replaced in the bag. This experiment is replaced 3 time. If third draw gives math book, what is the probability that first two drawn books were of physics.

Answer»


ANSWER :`(42)/(347)`.


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