61. In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither blue nor green ?
62. Dev can hit a target 3 times in 6 shots pawan can hit the target 2 times in 6 shots and Lakhan can hit the target 4 times in 4 shots. What is the probability that at least 2 shots hit the target -
63. A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
64. A bag contains 4 red, 5 yellow and 6 pink balls. Two balls are drawn at random. What is the probability that none of the balls drawn are yellow?
65. In a simultaneous throw of two dice, what is the probability of getting a doublet ?
66. An urn contains 6 red, 5 blue and 2 green marbles. If 2 marbles are picked at random, what is the probability that both are red?
67. You toss a coin AND roll a die. What is the probability of getting a tail and a 4 on the die?
68. Two cards are drawn from a pack of well shuffled cards. Find the probability that one is a club and other in King.
69. P and Q sit in a ring arrangement with 10 persons. What is the probability that P and Q will sit together?
70. In a race, the odd favour of cars P, Q, R, S are 1 : 3, 1 : 4, 1 : 5 and 1 : 6 respectively. Find the probability that one of them wins the race.
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