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The positive value of lambda for which t...

The positive value of `lambda` for which the co-efficient of `x^2` in the expression `x^2(sqrtx+lambda/x^2)^10` is 720, is

A

4

B

`2sqrt2`

C

`sqrt5`

D

`3`

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The correct Answer is:
A
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MCGROW HILL PUBLICATION-MATHEMATICAL INDUCTION AND BINOMIAL THEOREM-Questions from Previous Years. AIEEE/ JEE Main Papers
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