Choose the option which is different from the three options.

Three of the following four number-pairs are alike in a certain way and one is different. Find the odd one out.

The odd word is

In the following question, select the odd letters from the given alternatives.

In the following question, select the odd word pair from the given alternatives.

In each of the following questions, certain pairs of words are given, out of which the words in all pairs excepts one, bear a certain common relationship. Choose the pair in which the words are differently related?

Choose the related word/letters/number from the given alternatives.
 NPR : GHI : : TVX : ?

Four words have been given out of which three are alike in some manner, while one is different .Choose the odd one.