16*^(15)P_(n)=13*^(16)P_(n)

if .^(12)P_(6)+6.^(12)P_(5)=^(13)P_(n), then n

Find the value of n from each of the following: (i) 10 .^(n)P_(6) = .^(n+1)P_(3) (ii) 16.^(n)P_(3) = 13 .^(n+1)P_(3)

(i) If ""^(n)P_(5)=20xx""^(n)P_(3) , find n. (ii) If 16xx""^(n)P_(3)=13xx""^(n+1)P_(3) , find n. (iii) If ""^(2n)P_(3)=100xx""^(n)P_(2) , find n.

If ""^(15)P_(r-1): ""^(16)P_(r-2)=3:4 , find r.

IF ""^(15)P_(r-1):""^(16)P_(r-2) = 3 : 4 then r=

If ^(16)P(n, 3) = ^(13)P(n + 1, 3) , then n will be .... .

Let a_(n)=16,4,1, be a geometric sequence. Define P_(n) as the product of the first n terms. Then the value of (1)/(4)sum_(n=1)^(oo)P_(n)^((1)/(n)) is

If ^(^^)18C_(15)+2^(18)C_(16)+^(17)C_(16)+1=^(n)C_(3) then n=

Find n if ""^(n-1)P_(3) : ""^(n)P_(4) = 1:16 .