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If the coefficients of 5th, 6th , and 7t...

If the coefficients of 5th, 6th , and 7th terms in the expansion of `(1+x)^n` are in A.P., then `n=`

A

7only

B

14 only

C

7 or 14

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
c
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