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15 (fifteen) is a positive integer following 14 and preceding 16. Its ordinal form is written "15th" or "fifteenth".

Properties

In googology

In Greek-based naming systems, 15 is associated with prefix "pentadeka-", and with prefix "quindeci-" in Latin systems.

As a banknote denomination

The third Burmese kyat had banknotes with this number in the denomination.

Puzzle

15 puzzle is a puzzle with 15 squares.[1]

Sources

  1. Britannica, Fifteen Puzzle
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