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If x^(r) occurs in the expansion of (x+(...

If `x^(r)` occurs in the expansion of `(x+(1)/(x))^(n)`, then is coefficient is

A

`(n !)/((r !)^(2)) `

B

`(n !)/((r+1) !(r-1) !) `

C

`(n !)/(((n+r)/(2)) !((n-r)/(2)) !)quadtext ( `

D

`(n !)/((((r)/(2)))^(2)) `

Text Solution

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