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In the binomial expansion of (a - b)^(n)...

In the binomial expansion of `(a - b)^(n) , n ge 5` , the sum of
the ` 5^(th) and 6^(th)` terms is zero. Then, `a//b` equals

A

`(1)/(6) (n-5)`

B

`(1)/(5) (n-4)`

C

`(5)/((n-4))`

D

`(6)/((n-5))`

Text Solution

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The correct Answer is:
B
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