2 boxes have rocks the 1st has 5 red & 3 opal rocks...?
The 2nd box has 4 pink & 7 blue rocks. 1rock is chosen at random from each box. What is the probablity that a opal and pink marble will be chosen??
4/11 odds of choosing pink
3/8 odds of choosing opal
(4/11)*(3/8)= 12/88 or 3/22 odds of pulling opal and a pink
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