Binomial Theorem And Its Simple Applications Question 105
Question: The sum of the coefficients in the expansion of $ {{(1+x-3x^{2})}^{2163}} $ will be
[IIT 1982]
Options:
A) 0
B) 1
C) $ -1 $
D) $ 2^{2163} $
Show Answer
Answer:
Correct Answer: C
Solution:
- Putting x=1 in ($1+x- 3x^2$)2163.
we get sum of the coefficients as $ {{(1+1-3)}^{2163}}={{(-1)}^{2163}}=-1 $ .
BETA
