If `P(5, r)=P(6, r-1),\ fin d\ rdot`

If P(5, r)=2.P(6, r-1), find r.

If P(5, r)=P(6, r-1) ,find r.

If P(5,r)=2,P(6,r-1), find r

If P(5,r)=P(6,r-1),f in dr

If P(9, r)=3024 ,\ find rdot

If P(15 ,r-1): P(16 ,r-2)=3:4 , find rdot

Iff ""^(5)P_(r)=""^(6)P_(r-1) find r.

The set of values of r simultaneously satisfying the system of equations P(5,r)=2P(6,r-1) and 5P(4,r)=6P(5,r-1) is

Find r if 4.P(6,r)=P(6,r+1)