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OpenStudy (anonymous):
mary purchased a package of 9 different plants but she only needed 6 plants for planting. In how many ways can she select the 6 plants from the package to be planted?
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OpenStudy (anonymous):
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OpenStudy (anonymous):
9P6.total objects are 9 and selected are 6 so probability is 9P6
OpenStudy (anonymous):
9P6=9!/(9-6)!
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