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Un article trouvé pour ce sujet.
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Two spinners |
2008-02-05 |
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Kim pose la question :
Zack has two spinners with numbers on them. the probability of spinning
a 7 on both spinners is 3/20. if the probability of spinning a 7 on the first
spinner alone is 1/4 what is the probability of getting a 7 on the second
spinner alone?
Penny Nom lui répond. |
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