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In the expansion of (1+x)^(n) , coeffic...

In the expansion of `(1+x)^(n) `, coefficients of ` 2^(text (nd ))` `3^(rd)` and `4^(th)` terms are in A.P., then `n `=

A

1)7

B

2)9

C

3)11

D

4)none of these

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A
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HIMALAYA PUBLICATION-BINOMIAL THEOREM-QUESTION BANK
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