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A coin tossed live times. What is the probability that there is at least one tail?
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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?
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If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is?
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Three 6 faced dice are thrown together. The probability that all the three show the same number on them is?
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A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that all the four bulbs are defective.
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A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that atleast one bulb is good
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A bag contains 2 yellow, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?
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One year ago Jaya was four times as old as her daughter Nikitha. Six years hence, Mrs.Jayas age will exceed her daughters age by 9 years. The ratio of the present ages of Jaya and her daughter is :
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Five years ago, the total of the ages of a father and his son was 40 years. The ratio of their present ages is 4 : 1. What is the present age of the father?
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A father is twice as old as his son. 20 years ago the age of the father was 12 times the age of the son. The present age of the father is:
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