# Difference between revisions of "2011 AIME II Problems/Problem 6"

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− | Define an ordered quadruple (a, b, c, d) as interesting if <math> | + | Define an ordered quadruple (a, b, c, d) as interesting if <math>1≤a<b<c<d≤10</math>. |

## Revision as of 21:40, 30 March 2011

Define an ordered quadruple (a, b, c, d) as interesting if $1≤a<b<c<d≤10$ (Error compiling LaTeX. Unknown error_msg).