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Mathematics 9 Online
OpenStudy (anonymous):

How many different ways can you chosse 8 jellybeans from a bag of 15?

jimthompson5910 (jim_thompson5910):

You will use the combination n C r formula. Order does not matter and I'm assuming repeats aren't allowed here.

jimthompson5910 (jim_thompson5910):

\[\Large _n C _r = \frac{n!}{r!*(n-r)!}\]

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