What is $7!$ $7!$ ?

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Answer 1 · 2017-11-17T07:32:11

$7! = 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 = 5040$ $7! =7xx6xx5xx4xx3xx2xx1=5040$

$n!$ $n!$ 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 $7! =7xx6xx5xx4xx3xx2xx1=5040$

What is 7!7!7!?