Binomial Theorem 1 Question 14
15.
The sum of the coefficients of all odd degree terms in the expansion of
(a) -1
(b) 0
(c) 1
(d) 2
(2018 Main)
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Answer:
Correct Answer: 15. (d)
Solution:
Key Idea Use formula :
We have,
Sum of coefficients of all odd degree terms is