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A, B, C and D are to be seated in a row. C and D cannot be on adjacent seat. Also, B cannot be at the third place. Which of the following must be false?
  • a)
    A is at the fourth place
  • b)
    A is at the third place
  • c)
    A is at the second place
  • d)
    A is at the first place
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A, B, C and D are to be seated in a row. C and D cannot be on adjacent...
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

c. A is at the third place

b. A is at the second place

d. A is at the fourth place
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Community Answer
A, B, C and D are to be seated in a row. C and D cannot be on adjacent...
Given information:
- A, B, C, and D are to be seated in a row.
- C and D cannot be on adjacent seats.
- B cannot be at the third place.

We need to determine which of the following statements must be false.

To solve this problem, let's consider each option one by one:

a) A is at the fourth place:
- If A is at the fourth place, the possible seating arrangement could be:
- _ _ _ A
- In this case, C and D can be seated in the first three places, satisfying the condition that they cannot be adjacent.
- B can be seated in any of the three remaining places, as there is no restriction on B's position.
- Therefore, it is possible for A to be at the fourth place, so this statement is not necessarily false.

b) A is at the third place:
- If A is at the third place, the possible seating arrangement could be:
- _ _ A _
- In this case, C and D can be seated in the first and fourth places, satisfying the condition that they cannot be adjacent.
- B can be seated in any of the two remaining places, as there is no restriction on B's position.
- Therefore, it is possible for A to be at the third place, so this statement is not necessarily false.

c) A is at the second place:
- If A is at the second place, the possible seating arrangement could be:
- _ A _ _
- In this case, C and D can be seated in the first and fourth places, satisfying the condition that they cannot be adjacent.
- B can be seated in any of the two remaining places, as there is no restriction on B's position.
- Therefore, it is possible for A to be at the second place, so this statement is not necessarily false.

d) A is at the first place:
- If A is at the first place, the possible seating arrangement could be:
- A _ _ _
- In this case, C and D cannot be seated in the second and third places as they cannot be adjacent.
- Therefore, it is not possible for A to be at the first place, so this statement must be false.

Therefore, the statement "A is at the first place" must be false (option D).
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A, B, C and D are to be seated in a row. C and D cannot be on adjacent seat. Also, B cannot be at the third place. Which of the following must be false?a)A is at the fourth placeb)A is at the third placec)A is at the second placed)A is at the first placeCorrect answer is option 'D'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A, B, C and D are to be seated in a row. C and D cannot be on adjacent seat. Also, B cannot be at the third place. Which of the following must be false?a)A is at the fourth placeb)A is at the third placec)A is at the second placed)A is at the first placeCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A, B, C and D are to be seated in a row. C and D cannot be on adjacent seat. Also, B cannot be at the third place. Which of the following must be false?a)A is at the fourth placeb)A is at the third placec)A is at the second placed)A is at the first placeCorrect answer is option 'D'. Can you explain this answer?.
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