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Show all work. Mary purchased a package of 15 different plants.but she only needed 10 plants for planting. In how many ways can she select the 10 plants from the package to be planted?
13 years ago

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Reiny
You are choosing 10 from 15 which is
C(15,10) = 3003

C(15,10) = 15!/(10!5!) = 3003
13 years ago

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