Which of the following group of letters is different from the others?

Select that number which is different from the others.

Choose the word which is different from the other three :

Which one is different from the rest three?

Four groups of letters are given below, three of them are alike in certain way while one is different, choose the odd one :

If water is called food, food is called tree, tree is called sky, sky is called wall, then on which of the following grows a fruit?