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you have a standard deck of 52 cards. you pick one card and then, with out putting the first card back, you pick a second card. what is the probability that both cards will be 9s?
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2 votes
you have a standard deck of 52 cards. you pick one card and then, with out putting the first card back, you pick a second card. what is the probability that both cards will be 9s?

User Estrella
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1 Answer

6 votes
Prob of picking 9 in 1st turn = 4 / 52

Prob of picking 9 is 2nd turn = 3/51

So Probability for both = 4 * 3 / (52*51)
=1/221
User Pingolin
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