What is the value of (n!) by formula?

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Answer 1 · 2016-04-28T13:07:38

Please see below.

#n# factorial is given by

#n! =nxx(n-1)xx(n-2)xx........xx3xx2xx1#

it can also be written as

#n! = nxx(n-1)!#

#1! =1#

#2! =2xx1=2#

#3! = 3xx2xx1=6#

#4! = 4xx3xx2xx1=24#

#5! =5xx4xx3xx2xx1=120#

#6! =6xx5xx4xx3xx2xx1=720# and so on.