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On the trip home from the meeting where this AMC10 was constructed, the Contest Chair noted that his airport parking receipt had digits of the form , where , and  was the average of  and . How many different five-digit numbers satisfy all these properties?

 May 11, 2020
 #1
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-5

Please arrange your latex properly.

 

There are no numbers at all.

 

Which implies you copied this from a site, presumbly AoPS.

 May 11, 2020
 #2
avatar+980 
-5

Are you looking for the answer to 2007 AMC 10B Problem 8?

 May 11, 2020

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