**Question:**

The positive value of $\lambda$ for which the co-efficient of $x^{2}$ in the expression $x^{2}\left(\sqrt{x}+\frac{\lambda}{x^{2}}\right)^{10}$ is 720 , is:

Correct Option: 1

JEE Main Previous Year Jan. 10, 2019 (II)

**Solution:**

The positive value of $\lambda$ for which the co-efficient of $x^{2}$ in the expression $x^{2}\left(\sqrt{x}+\frac{\lambda}{x^{2}}\right)^{10}$ is 720 , is:

Correct Option: 1

JEE Main Previous Year Jan. 10, 2019 (II)
**Solution:**