Question 606635
Four cards are drawn at random from a deck of playing cards. What is the probability that
a. all are spades? (with replacement)
Ans: (1/4)^4
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b. they are of different suits? (without replacement)
Ans: (13/52)(13/39)(13/26)(13/13)
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c. there is only one heart? (without replacement)
Ans: [13C1*39C3]/52C4
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Cheers,
Stan H.