Symbols are
used as a
concise way of
giving lengthy
instructions
related to
numbers and
logic.
Math Symbols are
a communication
tool. Symbols are an
invention which is
used to eliminate
the need to write
long, plain language
instructions to
describe
calculations and
other processes.
The most
valuable, most
frequently used
Symbols in
mathematics . .
.:
The
most important, most
frequently used
Miscellaneous
symbols are listed
below.
Symbol
for a
"Factorial"

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The
"factorial
of n" is
the
factorial of a
positive
integer
called n. There
are no
factorials of
negative
integers.
The
"factorial
of n" is
the
product of n,
and all the
positive
integers
smaller than
n.
The
factorial
function is
written:
n! =
n(n1)(n2)(n3)
. . . (1)
The
factorial of
zero is defined
as 1.
0! = 1
Factorials
are used to
calculate:
1. The number
of different
ways the same
items can be
arranged
(Permutations)
2. The number
of different
ways to combine
groups of
objects without
regard to order
(Combinations).
Example
1:
! , 6!
6! =
(6)(5)(4)(3)(2)(1)
6! =
720