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Cardinal | eighty | |||
Ordinal | 80th (eightieth) |
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Factorization | 24× 5 | |||
Divisors | 1, 2, 4, 5, 8, 10, 16, 20, 40, 80 | |||
Roman numeral | LXXX | |||
Binary | 10100002 | |||
Ternary | 22223 | |||
Quaternary | 11004 | |||
Quinary | 3105 | |||
Senary | 2126 | |||
Octal | 1208 | |||
Duodecimal | 6812 | |||
Hexadecimal | 5016 | |||
Vigesimal | 4020 | |||
Base 36 | 2836 | |||
Hebrew | פ (Peh) |
80 (eighty) is the natural number following 79 and preceding 81.
80 is:
The Pareto principle (also known as the 80-20 rule) states that, for many events, roughly 80% of the effects come from 20% of the causes.
Every solvable configuration of the Fifteen puzzle can be solved in no more than 80 single-tile moves.
Jerry Rice wore the number 80 for the majority of his NFL career. The number 80 is also the retired number of Seattle Seahawks wide receiver Steve Largent; when Rice was traded to the Seahawks, Largent gave the team permission to unretire his number so Rice could wear it.
Eighty is also: