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- 13:12, 17 August 2012 (diff | hist) . . (+22) . . 2012 AMC 12B Problems/Problem 16
- 13:11, 17 August 2012 (diff | hist) . . (+430) . . 2012 AMC 12B Problems/Problem 16
- 13:07, 17 August 2012 (diff | hist) . . (+1,962) . . N 2012 AMC 12B Problems/Problem 16 (Created page with "Let the ordered triple <math>(a,b,c)</math> denote that <math>a</math> songs are liked by Amy and Beth, <math>b</math> songs by Beth and Jo, and <math>c</math> songs by Jo and Am...")
