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If the (r+1)th term in the expansion of ...

If the (r+1)th term in the expansion of `(root(3)((a)/(sqrt(b)))+sqrt((b)/(root(3)a)))^(21)`
has the same power of a and b, then the value of r is

A

9

B

10

C

8

D

6

Text Solution

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The correct Answer is:
A
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