Question: An urn contains three white and two black balls. Compute the expected value of X, i.e. the number balls that have to be drawn without

An urn contains three white and two black balls. Compute the expected value of X, i.e. the number balls that have to be drawn without replacement, until the first white ball appears, using the definition of E [X] and the fact that x is either 1,2 or 3.

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