If `9_(P_(r))=60480` then find the value of r.

If .^(10)P_(r) =5040 , find the value of r

If .^(n)P_(r)=720 and .^(n)C_(r)=120 then find the value of r.

If 10P_r=5040 , find the value of rdot

If "^10 P_r=5040 , find the value of r .

If ""^10 P_r=5040 , find the value of r.

If \ ^(10)P_r=5040 find the value of rdot

If 9P_5+5^9P_4=^(10)P_r , find the value of rdot

If ^0P_5+5^9P_4=^(10)P_r , find the value of rdot

If .^(6)P_(r): .^(6)P_(5) = 1:2 , find the value of r.

In Figure, if P Q_|_P S ,\ P Q S R ,\ /_S Q R=28^0a n d\ /_Q R T=65^0, then find the values of x\ a n d\ y