Arrange the given words in alphabetical order and choose the one that comes first.

Arrange the given words in the sequence in which they occur in the dictionary and then choose the correct sequence.
$1.$ Select $\,2.$ Seldom $\,3.$ Send $\,4.$ Selfish $\,5.$ Seller

$A$ 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.
$H, N, R, C, A, B$
$1, 2, 3, 4, 5, 6$

$A$ group of letters is given which are numbered $1, 2, 3, 4, 5$. 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.
$T, R, I, F, U$
$1, 2, 3, 4, 5$

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

Number of letters skipped in between adjacent letters in the series is two. Which one of the following alternatives observes this rule?