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PS - Probability (tough question)

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Intern
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Joined: 17 Jun 2009
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PS - Probability (tough question) [#permalink]

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New post 16 Jul 2009, 15:57
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Six cards numbered from 1 to 6 are placed in an empty bowl. First one card is drawn and then put back into he bowl; then a second card is drawn. If the cards are drawn at random and if the sum of the numbers on the cards is 8, what is the probability that one of the two card drawn is numberd 5?

(A). 1/6
(B). 1/5
(C). 1/3
(D). 2/5
(E). 2/3

Please explain. Tks

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Senior Manager
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Joined: 20 Mar 2008
Posts: 451

Kudos [?]: 135 [0], given: 5

Re: PS - Probability (tough question) [#permalink]

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New post 16 Jul 2009, 16:48
Total 5 combination possible for getting a sum of 8 in two draws. (26, 35, 44, 53, 62.) Anything with a '1' don't count. Now, between the 5 combos, two contain 5s, so I think it should be 2/5 - D

I'm not sure about this as probability is not exactly my forte.

Would be very interested in the OA?

Kudos [?]: 135 [0], given: 5

Re: PS - Probability (tough question)   [#permalink] 16 Jul 2009, 16:48
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PS - Probability (tough question)

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