Question 478909
Three cards are drawn from a pack of 52, each card being replaced before the next one is drawn. Compute the probability p that all are spades. A pack of 52 cards includes 13 spades. 
Here is how I did it: 
p = 13C3 / 52C3 = 286/22,100 = 0.0129 or 1.29%.
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Comment: Your's is the probability of picking 
a set of 3 clubs from all the sets of 3 cards.
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 However, this is NOT the right answer. My textbook's solution is solved like this: (13/52)^3 = 1/64 = 0.0156 or 1.56%.
Comment: This is the probability of successively 
selecting a club 3 times from a deck of 52 cards.
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Comment: An interesting difference. 
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cheers,
Stan H.