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Un article trouvé pour ce sujet.
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There are 30 marbles in a bag |
2008-11-21 |
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Cori pose la question :
There are 30 marbles in a bag. Twice as many red, as blue, and 1 more green than there are red. What is the probability that when one is pulled out, it will be red?
Penny Nom lui répond. |
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