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1. |
The term independent of x in the expansion of \[{{(1+x)}^{n}}{{\left( 1+\frac{1}{x} \right)}^{n}}\] is [EAMCET 1989] |
A. | \[C_{0}^{2}+2C_{1}^{2}+....+(n+1)C_{n}^{2}\] |
B. | \[{{({{C}_{0}}+{{C}_{1}}+....+{{C}_{n}})}^{2}}\] |
C. | \[C_{0}^{2}+C_{1}^{2}+.....+C_{n}^{2}\] |
D. | None of these |
Answer» D. None of these | |