10C2

i know the answer is 45.

but for some reason, i can't get THAT answer. i keep getting something else....

anyone help me please?

thank you in advance!

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- Jan 25th 2009, 10:14 PMBig-KPermutations.
10C2

i know the answer is 45.

but for some reason, i can't get THAT answer. i keep getting something else....

anyone help me please?

thank you in advance! - Jan 25th 2009, 10:19 PMandreas
- Jan 25th 2009, 10:28 PMBig-K
But does this 10 C 2= http://www.mathhelpforum.com/math-he...5c678939-1.gif have anything to do with the 2nd step?

if it does, how?

thank you! - Jan 25th 2009, 10:44 PMandreas