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2011 AIME II Problems/Problem 6

Revision as of 22:42, 30 March 2011 by Pkustar (talk | contribs)

Define an ordered quadruple (a, b, c, d) as interesting if $1≤a<b<c<d≤10$ (Error compiling LaTeX. Unknown error_msg). (Okay, if you go to edit page you can see that those wierd a's are supposed to be "less than or equal to" signs)

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