If 2nd, 3rd and 4th tems in the expansion of `(x+y)^n` be 240,720 and 1080 respectively, find x,y and n.

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

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.

Find the 3rd term in the expansion of (3x-5y)^(7)

If 3rd,4th, 5th terms in the expansion of (a+x)^(n) be 84,280 and 560, Find x, a and n .

If the 6th,7th, 8th terms in the expansion of (x+y)^(n) be 112,7 and 1/4 find x,y and n.

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

If the 3^(rd) , 4^(th) and 5^(th) terms in the expansion of (x + a)^(n) are 84, 280 and 560 respectively then find the values of a, x and n.