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Showing posts with label car. Show all posts
Showing posts with label car. Show all posts

Wednesday, September 30, 2009

Gas stations on a circular track

On a circular track, there are several gas stations. The total amount of gas in all these stations are just enough for a car to complete one lap. Prove that, starting with an empty car, one can choose an initial position such that he can complete the lap by subsequently filling gas in these stations.