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OpenStudy (anonymous):
Which of the following expressions would give the number of ways to choose a group of 7 from a group of 15?
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OpenStudy (anonymous):
7! - 15!7! ??
OpenStudy (anonymous):
|dw:1344503490152:dw|
OpenStudy (anonymous):
so am i right??
OpenStudy (anonymous):
|dw:1344503522112:dw|
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