The sum of the binomial coefficients of `[2x+1/x]^n` is equal to `256.` The constant term in the expansion is: (A) 1120 (B) 2110 (C) 1210 (D) none

The sum of the coefficients in the binomial expansion of (1/x + 2x)^n is equal to 6561. The constant term in the expansion is

The sum of the coefficients in the binomial expansion of (1/x + 2x)^n is equal to 6561. The constant term in the expansion is

If the sum of the binomial coefficients in the expansion of (x+ 1/x)^n is 64, then the term independent of x is equal to (A) 10 (B) 20 (C) 30 (D) 40

If the sum of the binomial coefficients in the expansion of (x+ 1/x)^n is 64, then the term independent of x is equal to (A) 10 (B) 20 (C) 30 (D) 40

If the sum of the binomial coefficient in the expansion of (2x+1/x)^(n) is 256, then the term independent of x is (i) 1120 (ii) 1024 (iii) 512 (iv) None of these

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 (x+1/x+1)^n is (A) 2n (B) 2n+1 (C) 2n-1 (D) none of these

The sum of the coefficients in the binomial expansion of (1/x +2x)^6 is equal to :