What is #7!#?

1 Answer
Shwetank Mauria
Nov 17, 2017

#7! =7xx6xx5xx4xx3xx2xx1=5040#

Explanation:

#n!# for #ninNN# represents a product of all natural numbers, from #1# to #n#

i.e. #n! =1xx2xx3xx4xx...............xxn#

We also write this as

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

Hence #7! =7xx6xx5xx4xx3xx2xx1=5040#

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