Q.If $\binom{18}{r} - \binom{18}{r-2} = 816$ , then $r$ is

The correct solution involves applying the fundamental concept to derive the final value step by step...

Already a member? Login here

Q.If (18r)−(18r−2)=816\binom{18}{r} - \binom{18}{r-2} = 816(r18​)−(r−218​)=816, then rrr is