The heights (in $\mathrm{metres}$) of the mountains in Tamil Nadu are as follows:

What is the difference between the heights of the mountains Anaimudi and Mahendragiri?

Serial Number	Mountains	Height (in $\mathrm{meters}$)
$1$	Doddabetta	$2637$
$2$	Mahendragiri	$1647$
$3$	Anaimudi	$2695$
$4$	Velliangiri	$1778$