1) Three 6 faced dice are thrown together. The probability that all the three show the same number on them is -. a. 1/216 b. 1/36 c. 5/9 d. 5/12
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2) A basket has 5 apples and 4 oranges. Three fruits are picked at random. The probability that at least 2 apples are picked is__________? a. 25/42 b. 9/20 c. 10/23 d. 41/42
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3) A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -. a. 8/15 b. 2/5 c. 3/5 d. 7/15
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4) If six persons sit in a row, then the probability that three particular persons are always together is____________? a. 1/20 b. 3/10 c. 1/5 d. 4/5
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5) If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is__________? a. 19/52 b. 17/52 c. 5/13 d. 4/13
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6) If four coins are tossed, the probability of getting two heads and two tails is__________? a. 3/8 b. 6/11 c. 2/5 d. 4/5
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7) If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is__________? a. 1/4 b. 1/2 c. 3/4 d. 3/5
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8) Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is_____________? a. 1/2 b. 16/19 c. 4/5 d. 17/20
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9) If a number is chosen at random from the set {1, 2, 3, …., 100}, then the probability that the chosen number is a perfect cube is___________? a. 1/25 b. 1/2 c. 4/13 d. 1/10
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10) A coin is tossed live times. What is the probability that there is at the least one tail? a. 31/32 b. 1/16 c. 1/2 d. 1/32
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11) The probability that a number selected at random from the first 50 natural numbers is a composite number is__________? a. 21/25 b. 17/25 c. 4/25 d. 8/25
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