Identify the odd one from the given groups of letters.

Identify the odd one from the list below.

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

Select the option in which the numbers share the same relationship as that shared by the given pair of numbers.
72-14

In each of the following select the one which is different from other three responses.

Choose the related word/letters/number from the given alternatives.
 36 : 6 : : 441 : ?

Three of the following four words are alike in a certain way and one is different. Pick the odd word out.