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13 people study French, 15 people study German and there are 21 people in total. What is probability to chose person who takes both of the languages?
5 years ago

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Answered by oobleck
13+15-x = 21
solve for x
P(both) = x/21
5 years ago
Answered by rsm sucks
7/21
5 years ago
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13 people study French, 15 people study German and there are 21 people in total. What is probability to chose person who takes both of the languages?

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