A box has 5 blue and 4 red balls. One ba...

A box has 5 blue and 4 red balls. One ball is drawn and not replaced. It colour is also not noted. Another ball is then drawn at random. What is the probability of second ball being blue.

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PRADEEP PUBLICATION-PROBABILITY-EXERCISE

Prove that P(A)=P(AcupB)+P(AcapB), where A and B are any two events as...
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A box has 5 blue and 4 red balls. One ball is drawn and not replaced. ...
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Find the mean of the following probability distribution of a random va...
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For a Binomial disribution mean is 5 and the number of trials is 50, f...
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For a random variable X, sumXP(X)=1.5, find the mean of probability di...
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A bag contains 3 white and 5 black balls. A ball is drawn at random. F...
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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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If E1 and E2 are independent events and P(E1)=rho1, P(E2)=rho2 then fi...
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A die is tossed twice. A 'success' is getting an even number on a toss...
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