Find conditional probability that there are three aces
A hand of 13 cards is dealt at random and without replacement from an ordinary deck of 52 playing cards. Find the conditional pr that there are at least three aces in the hand, given that there are at least two aces.
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Compute the probability of being dealt, at random and without replacement, a 13-card bridge hand consisting of 13 cards of the same unit?
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A surgical technique is performed on seven patients. You are told there is a 70% chance of success. Find the probability that the surgery is successful for exactly five patients.
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