Question

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?

• A. 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

Hint:

When working with seating arrangements, always account for constraints on seating positions and adjacent persons to find conflicting possibilities.

Answer 1

The Correct Option is A

We are given that A, B, C, and D are to be seated in a row. C and D cannot sit together, and B cannot sit at the third place. We need to find which statement must be false. - If A is at the first place, then B cannot be at the third place, and C and D cannot sit together. This violates the given conditions because C and D cannot be together and B cannot sit at the third place. - Therefore, the statement "A is at the first place" must be false.