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15. Probability
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Q6 of 55 Page 623

In 50 tosses of a coin, tail appears 32 times. If a coin is tossed at random, what is the probability of getting a head?

Total number times a coin is tossed = 50


Number of times tail occurred = 32


Number of times tail occurred = 50 – 32 = 18


Probability P() =


Probability of getting a head is P(head) = = =

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4

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Out of these families, a family was chosen at random. What is the probability that the chosen family has 2 children?

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7

In a cricket match, a batsman hits a boundary 6 times out of 30 balls he plays. What is the probability that in a given throw, the ball does not hit the boundary?

8

A die is thrown 40 times and each time the number on the uppermost face is noted. It was recorded as under:





















Outcome



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A die is thrown at random, What is the probability of getting a 5?

Questions · 55
15. Probability
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