Art of Problem Solving

User:Yuhao2012: Difference between revisions

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---> Solution 2
---> Solution 2
https://artofproblemsolving.com/wiki/index.php/2011_AMC_8_Problems/Problem_21#Solution_3_.28Using_the_Answer_Choices.29
https://artofproblemsolving.com/wiki/index.php/2011_AMC_8_Problems/Problem_21#Solution_3_.28Using_the_Answer_Choices.29
-> Solution 3
---> Solution 3


==AMC10==
==AMC10==

Revision as of 22:30, 12 October 2025