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The four-digit number $25AB$ is divisible by nine, with $A$ the tens digit and $B$ the units digit. How many different such four-digit numbers could $25AB$ represent?

 Apr 6, 2020
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2502  2511  2520  2529  2538  2547  2556  2565  2574  2583  2592  Total =  11 such numbers

 Apr 6, 2020

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