Mathematics · 2019
JEE Main · 10 January 2019, Shift 2 · Q67
The positive value of λ for which the co-efficient of x^2 in the expression x^2(√ x +(λ)/x^2)^10 is 720, is:
The positive value of $\displaystyle \lambda$ for which the co-efficient of $\displaystyle x^2$ in the expression
$$x^2\left(\sqrt{x}+\frac{\lambda}{x^2}\right)^{10} \text { is } 720 \text {, is : }
$$
Official answer
(4)
$\displaystyle 4$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.