If 4th term in the expansion of `(kx+ 1/x)^n is 5/2` then (A) n=8 (B) n=6 (C) `k=1/4` (D) `k=1/2`

n th term in the expansion of (x+(1)/(x))^(2n)

If the 4 th term in the expansion of (ax+1/x)^(n) is 5/2, then a=(1)/(2) b.n=8 c.a=(2)/(3) d.n=6

The number of terms in the expansion of (x+1/x+1)^n is (A) 2n (B) 2n+1 (C) 2n-1 (D) none of these

If the coefficient of 4th term in the expansion of (a+b)^(n) is 56, then n is

If the 5^(th ) term is the term independent of x in the expansion of (x^(2/3)+(1)/(x))^(n) then n= (A) 10 (B) 8(C) 7 (D) 12

Given positive integers r gt 1, n gt 2 and that the coefficient of (3rd)th and (r+2)th terms in the binomial expansion of (1+x)^(2n) are equal. Then (a) n=2r (b) n=2r+1 (c) n=3r (d) non of these

If the 4 th term in the expansion of (a x + (1)/(x))^(n) is (5)/(2) , for all x in R then the values of a and n are respectively

Find the (r+1) th term in the expansion of ((x)/(a)-(a)/(x))^(2n)

The coefficients of x^n in the expansion of (1+x)6(2n) and (1+x0^(2n-1) are in the rtio of (A) 1:2 (B) 1:3 (C) 3:1 (D) 2:1