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2007 iTest Problems/Problem 35

Revision as of 21:56, 7 October 2014 by Timneh (talk | contribs) (Created page with "== Problem == Find the greatest natural number possessing the property that each of its digits except the first and last one is less than the arithmetic mean of the two neighbor...")
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Problem

Find the greatest natural number possessing the property that each of its digits except the first and last one is less than the arithmetic mean of the two neighboring digits.

Solution

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