A bag contains 5 red marbles and 3 black...

A bag contains 5 red marbles and 3 black marbles. Three marbles are drawn one by one without replacement. What is the probability that at least one of three marbles drawn be black if the first marble is red?

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PRADEEP PUBLICATION-PROBABILITY-EXERCISE

The probability of occurrence of an event A is 0.5 and that of B is 0....
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If P(A)=2/5, P( C)=1/2 and P(AcapC)=1/5 then find P(A'capC').
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Find k, if the probability distribution of a random variable X is as f...
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Find the mean of the following probability distribution of a random va...
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For a random variable X, the variance of 6.25 and the mean is 6. find ...
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If E1 and E2 are independent events and P(E1)=rho1, P(E2)=rho2 then fi...
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A coin is tossed twice. Let X denotes of the number of times 'head' tu...
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