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
Eight friends, A, B, C, D, E, F, G and H, are sitting in two lines of four persons each. Both the lines are facing each other. A is facing D. E is to the immediate left of G. H is to the immediate right of B. C is facing G. F is facing H. B is to the immediate right of the person who is facing G. D is to the immediate left of F. Which four persons are sitting in the same line?
Nine employees, K, L, M, N, O, P, Q, R and S, are sitting in the office in a straight line, all facing the east. O is third to the right of M. K is third to the left of P. Q is between P and S. N is fourth to the right of M. P is to the immediate right of N. R is fourth to the left of O. Which of the following statements is NOT correct?
Eight north-facing restaurants named P, Q, R, S, T, U, V and W are located in a straight line. S is second to the left of T. W is third to the left of P. T is between P and V. S is third to the left of V. W is to the immediate right of U. R is third to the right of P. Who is sitting fourth to the right of S?
Anamika, Gopal, Nischal, Vanmayi, Shresta and Sripad are sitting in a straight line facing the north. Nischal is to the immediate left of Gopal. Shresta is between Anamika and Sripad. Sripad is at the second place from the right end. Four persons are sitting between Nischal and Vanmayi. If Gopal and Sripad interchange their positions, then who will be sitting between Vanmayi and Shresta?
A question is given, followed by two statements numbered (I) and (II). You have to decide whether the data provided in the statements is sufficient to answer the question. Read both the statements and select the appropriate answer.
Question: How many people are standing in the row where all people are facing north?
Statements:
(I) A is fourth from the left end; M is second to the right of A; and R is second from the left end.
(II) M is fourth from the right end; only two people Stand between M and B.
