What is the overall purpose of the partnership between

Which of the following groups of letters when sequentially placed from left to right will complete the given series? 

A, B, C and D are sitting around a circular table facing the centre. Who sits to the immediate right of A?

Statements:

Select the correct option that indicates the arrangement of the following words in a logical and meaningful order.

1. Pentagon

From the given option figures, select the one in which the question figure is hidden/embedded. (rotation is not allowed)

If '+' means '×', '×' means '–', '–' means '÷' and '÷' means '+', then what will come in place of the (?) in the following equation?

Statements:

Some elephants are fishes.

No fish is a tiger.

All deer are tigers.

Conclusions:

Select the option that is related to the third term on the same basis as the second term is related to the first term.

DAX:WZC ∷ VKO:?

Statements:

1. All papers are stationery.

2. Some stationery are books.

3. No book is a pen.

Conclusions :

Four letter-clusters have been given, out of which three are alike in some manner 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 given sets.