Binomial Theorem And Its Simple Applications Question 194
Question: What is the sum of the coefficients of $ {{(x^{2}-x-1)}^{99}} $
[Orissa JEE 2005]
Options:
A) 1
B) 0
C) -1
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
- Putting $ x=1 $ in $ {{(x^{2}-x-1)}^{99}} $
we get the sum of the coefficient of $ {{(x^{2}-x-1)}^{99}} $ = $ {{(1^{2}-1-1)}^{99}}=-1 $ .
BETA
