Monthly Archives: May 2014

Puzzle | Num3er 234

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Num3er 1462

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Pattern| Integers ending in 9, 99, 999, …

                       

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Puzzle | convex octagon (3,3,3,3,4,4,4,4)

                       

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Puzzle | Integers placed on a cube — Part 2

                         

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Puzzle | What time is it?

                       

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Num3er 96433469

  Prove that   96433469   is the largest integer such that each of its interior digits (non-leading digit and non-unit digit) is less than the average of its neighbors.                     … Continue reading

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Numbers 1 to 8 placed on a cube

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Num3er 1152

             

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Patterns| Base-10 integers in pair bases b1 and b2

                       

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