In a class, 5 girls are sitting in a straight row, facing the North. A sits to the immediate left of C and to the immediate right of D. E sits to the immediate right of B but to the immediate left of D. Who is sitting in the middle position of the row?
D
Solving the Seating Arrangement Puzzle
This problem involves determining the correct linear arrangement of five girls based on the given clues about their relative positions in a row facing North. When facing North, "immediate left" means the person is directly to your left side, and "immediate right" means the person is directly to your right side.
Analyzing the Clues and Building the Arrangement
Let's break down the information given in the question:
- There are 5 girls sitting in a straight row, facing the North.
- A sits to the immediate left of C. This means C is to the immediate right of A. We can represent this partial arrangement as: A C
- A sits to the immediate right of D. This means D is to the immediate left of A. We can represent this partial arrangement as: D A
Combining clues 2 and 3, we know that A is between D and C, with D immediately to A's left and C immediately to A's right. This gives us the sequence:
- D A C
Let's look at the other clues:
- E sits to the immediate right of B. This means B is to the immediate left of E. We can represent this partial arrangement as: B E
- E sits to the immediate left of D. This means D is to the immediate right of E. We can represent this partial arrangement as: E D
Combining clues 4 and 5, we know that E is between B and D, with B immediately to E's left and D immediately to E's right. This gives us the sequence:
- B E D
Combining the Sequences to Find the Full Row
We have two partial sequences:
- D A C
- B E D
Both sequences involve the person D. We can link these two sequences together using D. The sequence B E D ends with D, and the sequence D A C starts with D. Placing them together in the correct order:
- B E D A C
This sequence includes all five girls (B, E, D, A, C) and satisfies all the given conditions:
- A is immediate left of C (Yes, A C)
- A is immediate right of D (Yes, D A)
- E is immediate right of B (Yes, B E)
- E is immediate left of D (Yes, E D)
So, the final arrangement of the 5 girls from left to right is B, E, D, A, C.
Identifying the Middle Position
In a row of 5 people, the middle position is the 3rd position. Let's look at our final arrangement:
B (1st) - E (2nd) - D (3rd) - A (4th) - C (5th)
The person sitting in the middle position (the 3rd position) is D.
Therefore, D is sitting in the middle position of the row.
Revision Table: Seating Arrangement Clues
| Clue | Relationship | Partial Arrangement |
|---|---|---|
| A sits immediate left of C | A is to the left of C | A C |
| A sits immediate right of D | A is to the right of D | D A |
| E sits immediate right of B | E is to the right of B | B E |
| E sits immediate left of D | E is to the left of D | E D |
Additional Information: Linear Seating Arrangements
Linear seating arrangement questions are common in logical reasoning tests. They typically involve a fixed number of people sitting in a straight line (a single row) or multiple parallel lines (two rows facing each other).
- Facing Direction: Pay close attention to the direction people are facing (North, South, East, West). This determines which side is "left" and which is "right". If facing North, left is your left and right is your right. If facing South, left is your right and right is your left.
- Relative Positions: Clues describe positions relative to others (e.g., "to the left of", "to the right of", "immediate left", "immediate right", "second to the left"). "Immediate" means directly next to.
- Fixed Positions: Sometimes clues give fixed positions (e.g., "A is at one end", "B is in the middle").
- Building the Arrangement: Start with the most definitive clue or a clue that links two or more people. Build partial arrangements and then combine them using common individuals.
- Verification: Once you have a complete arrangement, reread all the clues to ensure your arrangement satisfies every condition.
These types of questions test your ability to process information systematically and apply logical deduction to build a spatial sequence.
Important Questions from Linear Arrangement
Seven people, A, B, C, D, E, F and G, are sitting in a straight row facing the north. Only two people sit to the left of C. Only two people sit between A and B. B sits to the left of A. E is an immediate neighbour of A to the right. Only one person sits to the right of D. F is not an immediate neighbour of B. Who sits at the centre?
P, Q, R and S are sitting on a bench and facing in the same direction. P sits next to Q but not next to R. S, who is sitting on the extreme right, does not sit next to either Q or R. How many of them each have two neighbors?
5 boys A, B, C, D and E are sitting in a row. E is sitting between D and A, B is to the right of A, C is at one of the extreme ends and C and D are sitting next to each other. Which of the following statement is false?
Five friends Ram, Priya, Raunak, Aditya and Shyam are sitting in a row facing north. Raunak is to the right of Shyam and Priya is to the left of Shyam but to the right of Rama. Raunak is to the left of Aditya. Who is fourth from the left end?
Seven friends P, Q, R, S, T, U, and V are sitting in a straight line facing north. Q sits fifth to the right of T. Q does not sit at any of the extreme ends. Two people sit between U and R. S sits third to the left of V. S sits exactly in the middle. U is not an immediate neighbour of P.
How many people sit between R and V?
