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1248 must be included (Posted on 2016-09-06) Difficulty: 2 of 5
There are three infinite arithmetic progressions.
Given that each of the numbers 1,2,3,4,5,6,7,8 occurs at least in one of these progressions, show that the number 1248 must occur at least in one of them.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Some Thoughtsre: Analytical solution - kudosAdy TZIDON2016-09-07 01:26:28
SolutionAnalytical solutionSteve Herman2016-09-06 10:54:23
SolutionBrute force (computer solution)Charlie2016-09-06 10:19:42
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