An urn contains 3 white and 6 red balls....

An urn contains 3 white and 6 red balls. 4 balls are drawn one by one with replacement from the urn.Find the probability distribution of the number of red balls drawn. Also find mean and variance of the distribution.

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MODERN PUBLICATION-PROBABILITY-EXERCISE

Find the probability distribution of white balls drawn when 3 balls ar...
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Two numbers are selected at random (without replacement) from the firs...
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An urn contains 3 white and 6 red balls. 4 balls are drawn one by one ...
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