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Binomial Theorem question

2019 · 10 Jan · Shift 2 · Q29
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  2. /JEE Main
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  4. /Binomial Theorem
  5. /2019 · 10 Jan · Shift 2 · Q29

Binomial Theorem question

2019 · 10 Jan · Shift 2 · Q29

JEE MainMathematicsBinomial TheoremMCQ+4 / −1
The positive value of λ\lambdaλ for which the co-efficient of x2 in the expression x2 (x+λx2)10{\left( {\sqrt x + {\lambda \over {{x^2}}}} \right)^{10}}(x​+x2λ​)10 is 720, is -
  1. A
    4
  2. B
    222\sqrt 222​
  3. C
    3
  4. D
    5\sqrt 55​
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