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2005 PMWC Problems/Problem T5

Revision as of 01:48, 6 October 2014 by Timneh (talk | contribs) (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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Problem

Mr. Wong has a $7$-digit phone number $\text{ABCDEFG}$. The sum of the number formed by the first $4$ digits $\text{ABCD}$ and the number formed by the last $3$ digits $\text{EFG}$ is $9063$. The sum of the number formed by the first $3$ digits $\text{ABC}$ and the number formed by the last $4$ digits $\text{DEFG}$ is $2529$. What is Mr. Wong’s phone number?


Solution

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