If all the letters in the word $ARGUMENT$ are rearranged in alphabetical order and substituted by the letter immediately following it in the English alphabet,what will be the new arrangement of letters?

From the word $LAPAROSCOPY$,how many independent meaningful words can be made without changing the order of the letters and using each letter only once?

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
Write the above English alphabet in reverse order. First,cancel every second letter and then select that letter which divides the remaining letters of the alphabet into two equal parts. This letter is:

$A$ group of letters is given which are numbered $1, 2, 3, 4, 5$ and $6$. Below are given four alternatives containing combinations of these numbers. Select the combination of numbers so that the letters arranged accordingly form a meaningful word.
$R, E, S, T, L, U$
$1, 2, 3, 4, 5, 6$

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
Which letter is seventh to the right of the eighteenth letter from the right end of the alphabet?

If the first and second letters in the word $MISFORTUNE$ were interchanged,also the third and the fourth letters,the fifth and the sixth letters and so on,which letter would then be the eighth letter counting to your left?