Revision history of "2005 PMWC Problems/Problem I7"

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  • (cur | prev) 06:26, 6 October 20071=2 (talk | contribs). . (1,237 bytes) (+1,237). . (New page: == Problem == How many numbers are there in the list <math>1, 2, 3, 4, 5, \dots, 10000</math> which contain exactly two consecutive <math>9</math>'s such as <math>993, 1992</math> and <ma...)