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Eighty

Eighty is the cardinal number that comes after seventy-nine and before eighty-one. It is represented by the numeral 80 in the decimal system. In English, the number eighty is typically spelled out as "eighty" or "eight-zero" in contexts where clarity is needed, such as in dates or phone numbers. The number eighty is significant in various cultural, historical, and mathematical contexts.

In mathematics, eighty is a composite number, meaning it has divisors other than one and itself. It

Historically, the number eighty has been used in various cultural and religious contexts. For example, in the

is
an
even
number
and
is
divisible
by
2,
4,
5,
8,
10,
16,
and
20.
The
number
eighty
is
also
a
perfect
square,
specifically
the
square
of
the
number
eight
(8
x
8
=
64).
In
the
context
of
time,
eighty
is
used
to
denote
the
number
of
years
in
a
century,
as
well
as
the
number
of
weeks
in
approximately
one
and
a
half
years.
Bible,
the
number
eighty
is
mentioned
in
the
context
of
the
life
of
Methuselah,
who
is
said
to
have
lived
for
969
years,
with
eighty
being
a
significant
part
of
his
lifespan.
In
modern
times,
the
number
eighty
is
often
used
in
various
contexts,
such
as
in
sports,
where
it
may
refer
to
the
number
of
points
in
a
game
or
the
number
of
players
on
a
team.