How do you simplify #5!*3!#?

1 Answer
Jim G.
Mar 4, 2018

#720#

Explanation:

#"the definition of "color(blue)"factorial"# is.

#•color(white)(x)n! =n(n-1)(n-2) ...... xx3xx2xx1#

#rArr5! =5xx4xx3xx2xx1=120#

#"and "3! =3xx2xx1=6#

#rArr5! xx3! =120xx6=720#

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