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

If the coefficients of the 6th and 5th terms of expansion `(1+x)^(n)` are in the ratio `7:5`, then find the value of n.

A

11

B

12

C

10

D

9

Text Solution

Verified by Experts

The correct Answer is:
A
`"Use" T_(r+1)=""^(n)C_(r)x^(n-r)y^(r)`
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PEARSON IIT JEE FOUNDATION-MATHEMATICAL INDUCTION AND BIONOMIAL THEOREM-LEVEL 1
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