Q23Multiple choice
If A and B are coefficient of xn in the expansions of (1 + x)2n and (1 + x)2n – 1 respectively, then equals 1 1
- (A)1
- (B)2
- (C)
- (D)2 n 2n A C [Hint: = 2n −1 n = 2 ] B Cn 1 7
If A and B are coefficient of xn in the expansions of (1 + x)2n and (1 + x)2n – 1 respectively, then equals 1 1