Number of terms in the binomial expression of `(x+a)^(n)` is

If the 2nd, 3rd and 4th terms in the binomial expansion of (x+a)^(n) are 240, 720 and 1080 for a suitable values of x, find x, a and n.

If the coefficients of the three successive terms in the binomial expansion of (1+x)^(n) are in the ratio 1:4.42 then the first of these terms in the expansion is

If w is a non-real cube root of unity x is a real number and n in N such that first three terms in the binomial expansion of (w+x)^(n) are 1,12bar(w) and 69w respectively,then

The 2^(nd), 3^(rd) and 4^(th) terms in the binomial expansion of (x+a)^(n) are 240, 720 and 1080 for a suitable value of x. Find x, a and n.

The number of real negative terms in the binomial expansion of (1+i x)^(4n-2),n in N ,x >0 is

The number of real negative terms in the binomial expansion of (1+i x)^(4n-2),n in N ,x >0 is

The number of real negative terms in the binomial expansion of (1+ix)^(4n-2), n in N, x gt 0 is

The fourth term in the binomial expansion of (x^2-1/x^3)^n is independent of x, when n is equal to:

The second,third and fourth terms in the binomial expansion quad (x+a)^(n) are 240,720 and 1080, respectively.Find x,a and n.