If A and B are coefficients of xn in the expansion of (1 + x)2n and (1 + x)2n-1 respectively then \(\frac{A}{B}\) =
A. \(\frac{1}{2}\)
B. \(\frac{1}{n}\)
C. 1
D. 2
Answer:D
If A and B are coefficients of xn in the expansion of (1 + x)2n and (1 + x)2n-1 respectively then \(\frac{A}{B}\) =
A. \(\frac{1}{2}\) B. \(\frac{1}{n}\) C. 1 D. 2