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## Main Question or Discussion Point

Hi

I was trying to solve the equation (m + n)!/m! = v for "n" and found an online calculator http://www.hostsrv.com/webmab/app1/MSP/quickmath/02/pageGenerate?site=quickmath&s1=equations&s2=solve&s3=advanced#reply" [Broken] which spit out the following as a solution:

n = factorial(-1)[vm!] - m

I Googled "inverse factorial" and searched on wolfram.com and wikipedia.com but didn't find a clear answer as to what inverse factorials are, much less how to calculate them.

Factorials are so simple to calculate (1 x 2 x 3 ... x n) do inverse factorials have a similarly simple method?

Thanks for any help

I was trying to solve the equation (m + n)!/m! = v for "n" and found an online calculator http://www.hostsrv.com/webmab/app1/MSP/quickmath/02/pageGenerate?site=quickmath&s1=equations&s2=solve&s3=advanced#reply" [Broken] which spit out the following as a solution:

n = factorial(-1)[vm!] - m

I Googled "inverse factorial" and searched on wolfram.com and wikipedia.com but didn't find a clear answer as to what inverse factorials are, much less how to calculate them.

Factorials are so simple to calculate (1 x 2 x 3 ... x n) do inverse factorials have a similarly simple method?

Thanks for any help

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