Which complexity class represents problems that can be

Find the odd one out.

Four numbers have been given out of which three are alike in some manner and one is different. Select the number that is different.

Four number triads have been given, out of which three are alike in some manner and one is different. Select the number triad that is different.

Four number-pairs are given, out of which three are alike in a certain manner and one is different. Choose the different number-pair.

Find the odd one out from the given alternatives.

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

Find the odd number pair from the given alternatives.

Find the odd set of numbers from the given alternatives.

Find out the odd letter/letters pair from the given alternatives.