Hello all. I'm looking for an equation, one that I use to know how to figure out(but alas I am getting old and senile), that will alow me to determine how many groups of a given number are in a entire set.(adsbygoogle = window.adsbygoogle || []).push({});

For example; in a set of 5, how many possible groups of 3 would there be? The answer is 10 sets of 3 in a set of 5.

So, if anyone knows an equation for this, I would be very greatful. TIA.

James

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# Homework Help: Determine how many groups of a given number are in a entire set

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