question_answer

If 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 from the left, then which of the following must be definitely false?

A)  A is at the second place             

B)  A is at the first place

C)  A is at the third place                

D)  A is at the fourth place

Correct Answer: B

Solution :

 : Let us consider counting from left to right. All possible situations of A are shown below.