If the letters of the word "EVEREST" are arranged alphabetically, then which letter would be $2\text{nd}$ in the right from the second letter of word?

Let's list the letters of the word "EVEREST": E, V, E, R, E, S, T.
Arrangling them in alphabetical order gives:
$1\text{st}$: E
$2\text{nd}$: E
$3\text{rd}$: E
$4\text{th}$: R
$5\text{th}$: S
$6\text{th}$: T
$7\text{th}$: V

The second letter of this rearranged word is E (at position 2).
The letter which is $2\text{nd}$ to the right of the second letter lies at position $2+2=4$.
The $4\text{th}$ letter in the sequence is R.