CAT 1998 — DILR Question 46
Linear ArrangementEasy
Passage / Data
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.
Which of the following must be false?
Answer & solution
A is at the first place
- B
A is at the second place
- C
A is at the third place
- D
A is at the fourth place
Solution
Since C and D cannot be together, they can occupy either of the following seats: (1st and 3rd), (1st and 4th) or (2nd and 4th). In the last two cases, since B cannot be in the 3rd place, A will have to be there.
Thus, we can see that A can never be in the 1st place.
Hence, statement (a) is false.