If A denotes the sum of all the coefficients in the expansion of and denotes the sum of all the coefficients in the expansion of , then :
- (A)✓ Correct
- (B)
- (C)
- (D)
Answer: (A)
Solution
Setting in each expansion gives the sum of coefficients:
Since , .
Since , .
JEE Main · 2024 · 27 Jan 2024 · Shift 1 · Single correct option