Revision history of "2005 PMWC Problems/Problem T5"

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  • (cur | prev) 02:48, 6 October 2014Timneh (talk | contribs)m . . (541 bytes) (+541). . (Created page with "== Problem == Mr. Wong has a <math>7</math>-digit phone number <math>\text{ABCDEFG}</math>. The sum of the number formed by the first <math>4</math> digits <math>\text{ABCD}</mat...")
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