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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bobbym
2014-02-07 13:42:14

You know how to use the multivariate hypergeometric?

Tpetrie01
2014-02-07 13:39:40

Thanks! This helps a lot.

bobbym
2014-02-07 13:20:35

Hi;

You would use the multivariate hypergeometric distribution. After that you would try it until you found the right number. This would require some trial and error best done by computer.

Tpetrie01
2014-02-07 13:11:48

Sorry, I know this post is old - but can you give me a hint as to how you figured this problem out, bobbym? I've got a similar problem and i want to know which direction i should be thinking in.

bobbym
2013-02-02 17:45:50

Sorry, that is what I got too, I meant 3 whites not 4!

cooljackiec
2013-02-02 10:48:49

Its okay, I got 21

bobbym
2013-02-01 19:56:58

Hi;

Sorry, I could not meet the time, I was sleeping.

The smallest I can come up with is a bag containing 11 reds, 3 whites, 2 blues and 5 greens.

cooljackiec
2013-02-01 11:40:55

A bag has marbles of 4 colors: red, white, blue, and green. Assume that if we take four marbles out at random (without replacement), each of the following is equally likely:

(1) one marble of each color is chosen,

(2) one white, one blue, and two reds are chosen,

(3) one blue and three reds are chosen,

(4) all four are red.

What is the smallest possible number of marbles in the bag?

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