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# While looking through all of the probability-related

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Manager
Joined: 06 Jun 2003
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While looking through all of the probability-related [#permalink]

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05 Dec 2003, 10:59
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

While looking through all of the probability-related postings here, I came across a lot of references to hypergeometric distribution. Can any of the experts here please summarize the scope of hyp. distribution that is covered in the GMAT?

Thanks.
CEO
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05 Dec 2003, 11:23
bluefox420 wrote:
While looking through all of the probability-related postings here, I came across a lot of references to hypergeometric distribution. Can any of the experts here please summarize the scope of hyp. distribution that is covered in the GMAT?

Thanks.

not much . just the basic formula.
Manager
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05 Dec 2003, 11:38
Most questions I have seen are of this type:

There are 3 red balls, 4 green balls and 5 yellow balls.
If 4 balls are selected, what is the probability of selecting exactly 2 yellow balls?

numerator is 5C2 x 7C2
denominator is 12C4

prob is (5C2 x 7C2) / 12C4

05 Dec 2003, 11:38
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