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Mohan post a letter to Sohan. It is known that one letter out of letters do not reach its destination. If it is certain that Sohan will reply if he receives the letter. If denotes the event that the Sohan receives the letter and denotes the event that Mohan gets a reply, then
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Question 1
Box 1 contains three cards bearing numbers 1, 2, 3; box 2 contains five cards bearing numbers 1, 2, 3,4, 5; and box 3 contains seven cards bearing numbers 1, 2, 3, 4, 5, 6, 7. A card is drawn from each of the boxes. Let be the number on the card drawn from the ith box, i = 1, 2, 3.The probability that is odd isThe probability that are in an aritmetic progression isQuestion 2
Let `U_1` , and `U_2`, be two urns such that `U_1`, contains `3` white and `2` red balls, and `U_2,`contains only`1` white ball. A fair coin is tossed. If head appears then `1` ball is drawn at random from `U_1`, and put into `U_2,` . However, if tail appears then `2` balls are drawn at random from `U_1,` and put into `U_2`. . Now `1` ball is drawn at random from `U_2,` .61 . The probability of the drawn ball from `U_2,` being white is
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| Question Text | Mohan post a letter to Sohan. It is known that one letter out of letters do not reach its destination. If it is certain that Sohan will reply if he receives the letter. If denotes the event that the Sohan receives the letter and denotes the event that Mohan gets a reply, then |
