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Let (1+x^(2))^(2)(1+x)^(n) = sum(k=0)^(n...

Let `(1+x^(2))^(2)(1+x)^(n) = sum_(k=0)^(n+4) a_(k) x^(k) `. If `a_(1) , a_(2) , a_(3)` are in A.P., then n=

A

6

B

5

C

7

D

2,3,4

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The correct Answer is:
D
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HIMALAYA PUBLICATION-BINOMIAL THEOREM-QUESTION BANK
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