If in the expansion of `(1/x+xtanx)^5` the ratio of `4^(th)` term to the `2^(nd)` term is `2/17pi^4`, then value of x can be

If in the expansion of (1/x+xtanx)^5 the ratio of 4^(th) term to the 2^(nd) term is 2/27pi^4 , then value of x can be

If in the expansion of (1/x+xtanx)^(5) and xgt0 the ratio of 4^(th) term to the 2^(nd) term is 2/27 pi^(4) , the value of [x] can be (where [.] is greatest integer function)

In the expansion of (2-3x^(3))^(20), if the ratio of 10^(th) term to 11^(th) term is (45)/(22) then x=

In the expansion of (2-3x^3)^(20) , if the ratio of 10^(th) term to 11^(th) term is 45/22 then x=

If in the expansion (1+x)^(n) the 5^(th ) term is 4 times the 4^(th) term and the 4^(th) term is 6 times the 3^(rd)' term, then n=

In the expansion of (1+x)^(n) ,the 5^(th) term is 4 times the 4^(th) term and the 4^(th) term is 6 times the 3^(rd) term,then n=...

In the expansion of (1+x)^(20), if ratio of nth term coefficient and (n+1)^(th) term coefficient is 1:2, then find the value of n.

If in the expansion of (1+x)^(n) the coefficient of 2nd, 3rd and 4th terms are in A.P., then the value of n is-

Consider the expansion of ((4x)/5-5/(4x))^8 Find the (r+1)^(th) term in the expansion