Seating Arrangement Logic Puzzle Explained
This question involves a logical deduction puzzle about the seating arrangement of seven people (A, B, C, D, E, F, and G) in a straight row facing north. We need to determine the exact seating order based on the given clues to find out who sits between B and A.
Decoding the Seating Clues
Let's break down the clues step-by-step to determine the seating arrangement:
- There are 7 positions in the row. Since they face North, 'left' means towards the beginning of the row and 'right' means towards the end.
- Clue 1: "D sits to the extreme right." This places D in the 7th position.
_ _ _ _ _ _ D - Clue 2: "Only one person sits between C and D." Since D is in position 7, C must be in position 5 to have one person (position 6) between them.
_ _ _ _ C _ D - Clue 3: "A sits third to the left of D." Counting three positions to the left of D (position 7): position 6 (1st left), position 5 (2nd left), position 4 (3rd left). So, A is in position 4.
_ _ _ A C _ D - Clue 4: "Only two people sit between A and F." A is in position 4.
- If F were to the right of A, the positions would be 5 and 6. However, position 5 is occupied by C and position 7 by D. So, F cannot be to the right of A with two people in between.
- Therefore, F must be to the left of A. The two positions between A (position 4) and F would be positions 3 and 2. This places F in position 1.
F _ _ A C _ D
- Clue 5: "B is an immediate neighbour of F." Since F is in position 1, its only neighbour is position 2. Thus, B is in position 2.
F B _ A C _ D - Clue 6: The remaining people are E and G. The remaining positions are 3 and 6.
F B _ A C _ D - Clue 7: "G is not an immediate neighbour of A." A is in position 4. Its immediate neighbours are positions 3 and 5. Position 5 is occupied by C. Therefore, G cannot be in position 3. This means G must be in position 6.
F B _ A C G D - The only person left is E, and the only position left is 3. So, E is in position 3.
F B E A C G D
Final Seating Arrangement
The final arrangement of the seven people from left to right is F, B, E, A, C, G, D.
| Position 1 | Position 2 | Position 3 | Position 4 | Position 5 | Position 6 | Position 7 |
| F | B | E | A | C | G | D |
Determining Who Sits Between B and A
Looking at the final arrangement:
- B is in position 2.
- A is in position 4.
- The person sitting between position 2 (B) and position 4 (A) is in position 3.
- The person in position 3 is E.
Therefore, E sits between B and A.
Important Questions from Seating arrangement
Five people A, B, C, D and E are seated about a round table. Every chair is spaced equidistant from adjacent chairs.
(i) C is seated next to A
(ii) A is seated two seats from D
(iii) B is not seated next to A
On the basis of above information, which of the following must be true?
1. D is seated next to B
2. E is seated next to A
3. D and C are separated by two seats
Select the correct answer using the code given below:
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