question_answer

Direction: Answer the questions based on the following information.

A, B, C and D are to be seated in a row but C and D cannot be together. Also, B cannot be at the third place.

If A and B are together, then which of the following must be necessarily true?

A)  C is not at the first place

B)  A is at the third place

C)  D is at the first place

D)  C is at the first place

Correct Answer: B

Solution :

On the basis of the information given in the questions, we find that C and D can take three positions as shown in the diagram following the restriction that C and D cannot be together. There is only one position, where A and B are together that A and B occupy second and third place. B cannot be at third place as per restriction. Hence, A has to be at third place.