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No fours on my odometer (Posted on 2016-06-02) Difficulty: 2 of 5
My lousy car has an odometer without 4s — in every position, the counter advances from 3 directly to 5.
For example, when it read 000039 I drove one mile and watched it roll over to 000050.
Today the odometer reads 002005.

How many miles has the car actually traveled?

Source: 2005 American Mathematics Competition

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
re: Possible solution.Charlie2016-06-02 09:09:32
Some ThoughtsPossible solution.broll2016-06-02 08:13:37
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