Q101
Open questionWhat is the probability that a leap year has 53 Sundays and 52 Mondays?
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Probability
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Q102
Open questionA bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -
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Q103
Open questionA box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are picked at random, what is the probability that they are all blue?
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Q104
Open questionIn a party there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at the least two couples?
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Q105
Open questionIf 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 -
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Q106
Open questionA box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are drawn what is the probability that one is yellow and two are red?
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Q107
Open questionFrom a pack of cards two cards are drawn one after the other, with replacement. The probability that the first is a red card and the second is a king is -
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Q108
Open questionA coin is tossed live times. What is the probability that there is at the least one tail?
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Q109
Open questionA box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If two marbles are picked at random, what is the probability that they are either blue or yellow?
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Q110
Open question10 books are placed at random in a shelf. The probability that a pair of books will always be together is -
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Q111
Open questionOut of 10 persons working on a project, 4 are graduates. If 3 are selected, what is the probability that there is at least one graduate among them?
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Q112
Open questionA box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If four marbles are picked at random, what is the probability that none is blue?
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Q113
Open questionThe probability that a number selected at random from the first 50 natural numbers is a composite number is -
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Q114
Open questionIf a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is -
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Q115
Open questionA bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?
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Q116
Open questionA box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that exactly three bulbs are good.
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Q117
Open questionA basket has 5 apples and 4 oranges. Three fruits are picked at random. The probability that at least 2 apples are picked is -
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Q118
Open questionOut 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 -
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Q119
Open questionThe probability that A speaks truth is and that of B speaking truth is . What is the probability that they agree in stating the same fact?
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Q120
Open questionA box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good.
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