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Problem related to playing cards

Cards are randomly drawn one at the time and with replacement from a standard deck of 52 playing cards.

(a) Find the probability of getting the fourth spades on the 10th draw.

(b) Determine the expectation and variance of the number of draws required to get four spades.

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    Cards are randomly drawn one at the time and with replacement from a standard deck of 52 playing cards. (a) Find the probability of getting the fourth spades on the 10th draw. (b) Determine the

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