Homework Help: math

Posted by Anonymous on Thursday, October 18, 2007 at 10:04pm.

A bag contains 2 white marbles, 4 blue marbles, and 5 red marbles. Three marbles are drawn from the bag. What is the probability that not all of them are red?

math - Reiny, Thursday, October 18, 2007 at 10:36pm
First find the prob that ALL of them ARE red, which is
(6/11)(5/10)(4/9) = 2/33

So the prob that not all of them are red
= 1-2/33
=31/33
math - JJJ, Monday, March 12, 2012 at 12:14pm
There are 5 marbles in a box. One is black, one is yellow, one is red, one is purple and one is orange.

Please answer this
math - trolol, Wednesday, March 14, 2012 at 12:28am
The answer is 5 marbles in a box. One is black, one is yellow, one is red, one is purple and one is orange.
math - dayja, Monday, February 25, 2013 at 8:08pm
It will be 5/5 because it 's only one each

Answer this Question

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