Difference between revisions of "2012 AMC 12B Problems/Problem 12"
Newchie123 (talk | contribs) (Created page with "There are 20 Choose 2 selections however, we count these twice therefore 2* 20 C 2 = 380. The wording of the question implies D not E.") |
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Revision as of 16:51, 26 February 2012
There are 20 Choose 2 selections however, we count these twice therefore
2* 20 C 2 = 380. The wording of the question implies D not E.
