Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
In the English alphabet,which letter will be to the immediate left of $M?$

$A$ 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.
$R, M, N, B, U, E$
$1, 2, 3, 4, 5, 6$

Find which one word cannot be made from the letters of the given word.
$CHOREOGRAPHY$

After arranging the letters of the word $FOLK$ in alphabetical order,if each letter is substituted by the letter immediately preceding to it in the English alphabet,what will be the resultant form of the word?

Find which one word cannot be made from the letters of the given word: $REASONABLE$.

If you pick up from the following alphabet,the sixth and the fourteenth letters from your right and then pick up the fifth and twentieth letters from your left and form a meaningful word,what is the first letter of that word?
$A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z$