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- 20:53, 5 August 2017 (diff | hist) . . (+1,319) . . 1978 IMO Problems/Problem 6 (Solution (In Progress))
- 20:17, 5 August 2017 (diff | hist) . . (+633) . . N 1978 IMO Problems/Problem 6 (Created page with "<math>emph{Problem:}</math> An international society has its members from six different countries. The list of members has 1978 names, numbered <math>\color[rgb]{0.35,0.35,0.3...")
