The full form of ATM is 

Four letter clusters are given, three of them are alike in a certain manner and one is different. Choose the different letter cluster.

Find out the odd word/letters/number/number pair from the given alternatives.

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

Select the odd one out from the given alternatives.

Three of the following four letter-clusters are alike in a certain manner and one is different. Select the odd letter-cluster.

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

Find the odd one out.

A, E, I, L, Q, U

Select the letter cluster which does not belong to the same group from the given alternatives.

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