**Question:**

The coefficient of $x^{2}$ in the expansion of the product $\left(2-x^{2}\right) .\left(\left(1+2 x+3 x^{2}\right)^{6}+\left(1-4 x^{2}\right)^{6}\right)$ is

Correct Option: 1

JEE Main Previous Year Online April 16, 2018

**Solution:**

The coefficient of $x^{2}$ in the expansion of the product $\left(2-x^{2}\right) .\left(\left(1+2 x+3 x^{2}\right)^{6}+\left(1-4 x^{2}\right)^{6}\right)$ is

Correct Option: 1

JEE Main Previous Year Online April 16, 2018
**Solution:**