Binomial Theorem 1 Question 7
8. The sum of the coefficients of all even degree terms is
(2019 Main, 8 April I)
(a) 29
(b) 32
(c) 26
(d) 24
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Answer:
Correct Answer: 8.
Solution:
Key Idea Use formula :
Given expression is
The sum of the terms with even power of
Now, the required sum of the coefficients of even powers of
