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#

Related questions
See all questions in Factorial Identities
Impact of this question
2489 views around the world
You can reuse this answer
Creative Commons License