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Jack and Ace

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by harsh.champ » Wed Feb 17, 2010 6:08 am
Two cards are drawn at random from a pack of 52 cards. What is the probability that one may be a jack and the other an ace?

A.8/663
B.77/773
C.11/600
D.1/7
E.None of the above.
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by sadullaevd » Wed Feb 17, 2010 6:31 am
probability cases:

Jack and Ace = 4/52*4/51 P(A)

Ace and Jack = 4/52*4/51 P(B)

together = P(A)+P(B)= 8/663

should be A.

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by money9111 » Wed Feb 17, 2010 8:02 am
sadullaevd i think you are correct... i just realized that I did this incorrectly by not taking into account tha tafter you choose 1 jack, you then only have 51 cards vs. 52... same for the aces...
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