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How many distinct, non-equilateral triangles with a perimeter of 60 units have integer side lengths a, b and c such that a, b, c is an arithmetic sequence?

 May 22, 2020
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"How many distinct, non-equilateral triangles with a perimeter of 60 units have integer side lengths a, b and c such that a, b, c is an arithmetic sequence?"

 

 May 22, 2020

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