Add New Description

Fill up the form and submit

r! .^{n} C_{r} = ?

\frac{n!}{(n - r)!}

\frac{n!}{r}

\frac{n!}{r!}

\frac{(n - r)!}{r!}

ANS : 1

Descrption

To add a description please, login first. click here to login

Cancel Login