SOLUTION: The value of 9C2
Algebra.Com
Question 924801: The value of 9C2
Found 2 solutions by ewatrrr, MathLover1:
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
9C2 = 9!/(2!7!) = = 36
...
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Recommend Using Calculators to Check one's work.
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
So choose (where order does not matter) yields unique combinations.
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