Thread: Club 27
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Old 05-04-2014, 12:43 AM   #256
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Arrow 3 cubed

3 cubed is 27, so the cube root of 27 is 3..

A centered hexagonal number, or hex number, is a centered figurate number that represents a hexagon with a dot in the center and all other dots surrounding the center dot in a hexagonal lattice...

Arithmetic mean of first 37 triangular numbers is 247 ...
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