Evaluate
Q `""^(6)P_(5)`

Evaluate Q ""^(6)P_(5)

Find the value of ""^6P_5

Find the value of 'r' if ""^(5)P_(r )=""^(6)P_(r-1) .

Fine r if (i) ""^(5) P_(r) =2 ""^(6)P_(r-1) (ii) ""^(5) P_(r) = ""^(6)P_(r-1)

If ""^(12)P_(r)=""^(11)P_(6) + 6 (""^(11)P_(5)) , then r is equal to

Find r : ""^(5) P_(r) =42 ""^(6)P_(r-1)

Find 'r' if : (i) ""^(5)P_(r )= ""^(6)P_(r-1) (ii) 5""^(4)P_(r )=6""^(5)P_(r-1) (iii) ""^(5)P_(r )=2""^(6)P_(r-1) (iv) ""^(10)P_(r+1): ""^(11)P_(r )=30 :11 .