Posted by **Sabrina** on Tuesday, April 21, 2009 at 7:22pm.

Suzy has a bag containing 5 red marbles, 2 green ones, 4 white ones, and 3 purple ones. She grabs 9 of them. Find the probability that she does not have all the green ones. Express the answer as a fraction in lowest terms.

- College Math -
**Reiny**, Tuesday, April 21, 2009 at 9:52pm
Find the prob of getting both green ones

which is

C(2,2)*C(12,7)/C(14,9)

= 792/2002

so prob(not all green) = 1- 792/2002

= 1210/2002

55/91

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