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Probability

Short Answer Type

381. Find the sample space associated with the experiment of rolling a pair of dice (one is blue and one is red). Also, once find the number of elements of this sample space.

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382. A boy has a 1 rupee coin, a 2 rupee coin and a 5 rupee coin in his pocket. If one rupee coin is denoted by 1, two rupee coin by 2, 5 rupee coin by 5 and two coins are drawn at random, write the associated sample space.

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Ans. S = {(1,2), (1,5), (2,1), (2,5), (5,1), (5, 2)}

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383. Write the sample space of number of children born in the maternity ward of a hospital during a particular week.

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384. Write down the sample space of number of accidents on a busy road during a year.

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385. A coin is tossed. If it shows a head, we draw a ball from a bag consisting of 3 blue and 4 white balls. If it shows a tail, we throw a-die. Describe the sample space of the experiment.

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386. Describe the sample space of tossing a coin until a head shows up.

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387. A bag consists of one nickel, one copper and one silver coin. One coin is drawn from the bag and then replaced. This is continued until the silver coin shows up. Find the sample space.

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388. From 2 men and 3 women, two persons are selected. Describe the sample space of the experiment.

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389. A coin is tossed twice, if the second throw results in a tail, then the coin is tossed the third time. Write the sample space of the experiment.

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390. There are 1 boy and 2 girls in team X and 2 boys and 2 girls in team Y. One of the teams is selected at random and a child chosen from it. Write the sample space of the experiment.

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