Q21Multiple choice
The coefficient of xn in the expansion of (1 + x)2n and (1 + x)2n – 1 are in the ratio.
- (A)1 : 2
- (B)1 : 3
- (C)3 : 1
- (D)2 : 1 2n 2n – 1 [Hint : Cn : Cn ]
The coefficient of xn in the expansion of (1 + x)2n and (1 + x)2n – 1 are in the ratio.