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# i) From an ordinary deck of cards, only 12 picture cards are

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Senior Manager
Joined: 05 Jun 2008
Posts: 289
i) From an ordinary deck of cards, only 12 picture cards are  [#permalink]

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15 Oct 2008, 06:14
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Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

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(i) From an ordinary deck of cards, only 12 picture cards are retained. They are shuffled (mixed) and a man draws 2 cards at random. He then announce one of these cards is the King or Spades. What is the probability that he holds two Kings?

(ii) The 2 cards are replaced and the cards re-shuffled. He then draws 2 cards, and announces that he holds at least one King. Find the probability that he holds two Kings in his hand

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Manager
Joined: 12 Feb 2008
Posts: 175

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16 Oct 2008, 08:23
i get 1/11 for both,

what is the OA?
Manager
Joined: 15 Apr 2008
Posts: 159

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16 Oct 2008, 10:38
I am also getting 1/11 for both

vivek, are you sure both the questions are right. they ask the same thing.
Senior Manager
Joined: 05 Jun 2008
Posts: 289

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17 Oct 2008, 01:31
ALD wrote:
I am also getting 1/11 for both

vivek, are you sure both the questions are right. they ask the same thing.

i have downloaded these question from some where, the OAs are (i) 3/11 (ii) 3/19
VP
Joined: 17 Jun 2008
Posts: 1474

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17 Oct 2008, 03:25
I understood why it should be 3/11 for the first.

Basically, the person has already one king in his hand. Hence, the probability of getting another king out of a total of remaining 11 cards is 3C1/11C1 = 3/11.

But, I am not sure how the second one has got 3/19.

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: PSP003 &nbs [#permalink] 17 Oct 2008, 03:25
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