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

The number of terms in the expansion of (1+2x+x^2)^n is :

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

The middle terms in the expansion of (1+x)^(2n+1) is (are)

The middle term in the expansion of (x+(1)/(2x))^(2n) is -

Statement-1 The number of terms in the expansion of (x + (1)/(x) + 1)^(n) " is " (2n +1) Statement-2 The number of terms in the expansion of (x_(1) + x_(2) + x_(3) + …+ x_(m))^(n) "is " ^(n + m -1)C_(m-1) .

The number of terms in the expansion of (x^(2)+1+(1)/(x^(2)))^(n),n in N, is:

The middle term in the expansion of (1 - (1)/(x))^(n) (1 - x)^(n) is

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