Revision history of "1985 AJHSME Problem 22"

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  • (cur | prev) 20:30, 31 January 2021Coolmath34 (talk | contribs). . (788 bytes) (+788). . (Created page with "== Problem == Assume every 7-digit whole number is a possible telephone number except those that begin with <math>0</math> or <math>1</math>. What fraction of telephone numb...")