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In the expansion of (3sqrt(a/b)+3sqrt(b/...

In the expansion of `(3sqrt(a/b)+3sqrt(b/sqrt(a)))^21`, the term containing same powers of a & b is

A

`11^("th")`

B

`13^("th")`

C

`12^("th")`

D

`6^("th)`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • If (r+ 1) th term in the expansion of root3((a)/(sqrtb)) + sqrt((b)/(root3(a)))^(21) has the same power of a and b, then the value of r is

    A
    9
    B
    10
    C
    8
    D
    6

  • Which term in the expansion of (root(3)((a)/(sqrt(b)))+sqrt((b)/(root(3)(a))))^(21) contains a and b to one and the same power

    A
    9th
    B
    10th
    C
    8th
    D
    6th

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