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December 20, 2014

December 20, 2014

Posted by **jon apples** on Tuesday, October 16, 2012 at 4:13am.

- math -
**Reiny**, Tuesday, October 16, 2012 at 9:20amcould be RR GG or BB , assuming the 1st marble is not returned

prob(RR) = (8/16)(7/15) = 7/30

prob(GG) = (6/16)(5/15) = 1/8

.....

add them up.

I am sure you can handle the rest

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