Thread: math-algebra?
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Old 03-12-2008, 09:42 PM
Megan J Megan J is offline
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Megan J has a spectacular aura about
1) you have to use the combination formula. how many ways to choose 10 questions from 12 questions. your calculator has an nCr button you can use or the formula:
nCr = (n!) / [r!(n-r)!]

12 C 10 = 66

2) I don't know how to do this one sorry
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