Which one of the following conservation reserve of

Find the one which does not belong to that group?

Find the odd set of numbers from the given alternatives?

Find the odd one out

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the odd letter-cluster. 

Four numbers have been given, out of which three are alike in a certain way and one is different. Select the one that is different.

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

Select the odd letters from the given alternatives?

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

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.

Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.