Posted by **purple** on Saturday, March 20, 2010 at 9:37pm.

Two marbles are drawn from a bag containing 6 white, 4 red, and 6 green marbles. Find the probability of both marbles being white.

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**Jen**, Saturday, March 20, 2010 at 11:31pm
The probability of one of the marbles being white is 6/16=3/8 so the probability of both of the marbles being white is (3/8) x (3/8)

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**Reiny**, Saturday, March 20, 2010 at 11:40pm
Jen's answer assumes that the first marble drawn is then returned to the bag.

If we simply draw two marbles, one after the other, the prob of the stated event is

6/16*5/15

= 1/8

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