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## Main Question or Discussion Point

I wish to calculate the number of objects in the population I'm selecting from, given that I am choosing r objects and there are nCr different combinations.

- Thread starter moonman239
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- #1

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I wish to calculate the number of objects in the population I'm selecting from, given that I am choosing r objects and there are nCr different combinations.

- #2

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Do you know the equation for [itex]_{n}C_{r}[/itex]?I wish to calculate the number of objects in the population I'm selecting from, given that I am choosing r objects and there are nCr different combinations.

- #3

chwala

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kindly read on combinations and permutations and be specific..

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HallsofIvy

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