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84 (eighty-four) is a positive integer following 83 and preceding 85. Its ordinal form is written "eighty-fourth" or 84th.

Properties

In chess

It is also the number of possible king moves in 4×4 minichess.

84.gif

In googology

In Greek-based number-naming systems, 84 is associated with prefix "tetraoctaconta-", and with prefix "quattuoroctoginti-" in Latin systems.

Sources

  1. MathWorld, Tetrahedral Number
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