8, 13, 8, 7, 8 ...Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.
What number comes next in this series?
8, 13, 8, 7, 8, ___, ___
The series is the number of letters required to spell the regular shapes (triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, ...)
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