Consider the following

Statement-I In the nitration of aniline, more amount of $m$-nitroaniline is formed than expected.

Statement-II In the presence of a strongly acidic medium, aniline is protonated to form anilinium ion, which is meta-directing.

The correct answer is

If $f(x)=(x+1)^2-1, x \geq-1$, then $\left\{x \mid f(x)=f^{-1}(x)\right\}$ is

If $11^{12}-11^2=k\left(5 \times 10^9+6 \times 10^9+33 \times 10^8\right. \left.+110 \times 10^7+\ldots+33\right)$, then $k=$