Find odd in the following

Directions : In each of the following questions, four words have been given out of which three are alike in a certain way and one is different. Choose out the odd one.

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

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

find the odd word/letters/numbers from the given alternatives.

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