Five persons are sitting in a row facing the north. One of the two persons at the extreme ends is an introvert and the other one is an extrovert. A thin person is sitting to the immediate right of an intelligent person. A weak person is sitting to the immediate left of the extrovert person. The intelligent person is sitting exactly between the introvert and the thin persons. Which of the following persons is sitting at the centre?
Thin
Analyzing the Seating Arrangement Puzzle
This problem requires us to determine the seating arrangement of five persons based on a set of clues and identify who is sitting in the centre. The persons are arranged in a row, all facing North. We need to carefully analyze each condition to build the correct seating order. Let's break down the given information about the five persons and their positions.
Decoding the Seating Arrangement Clues
Here are the key clues provided in the question:
- There are five persons in a row facing North.
- One person at each extreme end is an introvert, and the other is an extrovert.
- A thin person sits to the immediate right of an intelligent person.
- A weak person sits to the immediate left of the extrovert person.
- The intelligent person is positioned exactly between the introvert and the thin persons.
Step-by-Step Deduction for the Arrangement
Let's deduce the seating order step by step using the clues:
- Clue 5 Analysis: The intelligent person is between the introvert and the thin persons. This means they are seated consecutively in one of these orders: (Introvert, Intelligent, Thin) or (Thin, Intelligent, Introvert).
- Clue 3 Integration: We know the thin person is to the immediate right of the intelligent person. This fits the pattern (Intelligent, Thin). Combining this with Clue 5, the only possible sequence is: (Introvert, Intelligent, Thin). This block occupies three adjacent seats.
- Clue 2 Application: The two extreme ends (positions 1 and 5) are occupied by the introvert and the extrovert. Since the block identified in step 2 starts with the introvert, this introvert must be at one of the ends. Let's assume the introvert is at the leftmost end (position 1).
- Arrangement Build-up: Based on the above, the first three positions are:
- Position 1: Introvert
- Position 2: Intelligent
- Position 3: Thin
- Determining the Other End: According to Clue 2, the other end (position 5) must be the extrovert. Now the arrangement looks like this:
- Position 1: Introvert
- Position 2: Intelligent
- Position 3: Thin
- Position 4: ?
- Position 5: Extrovert
- Clue 4 Integration: The weak person is to the immediate left of the extrovert. The extrovert is in position 5. The seat immediately to the left is position 4. Therefore, the weak person must be in position 4.
Final Seating Arrangement
The complete seating arrangement from left to right (West to East) is:
| Position 1 | Position 2 | Position 3 | Position 4 | Position 5 |
| Introvert | Intelligent | Thin | Weak | Extrovert |
We can also represent this linearly: Introvert - Intelligent - Thin - Weak - Extrovert.
Identifying the Centre Person
In a row of five people, the centre position is the 3rd position. Looking at our final arrangement, the person occupying the 3rd position is the thin person.
Conclusion on Centre Seating
Therefore, the thin person is sitting in the centre of the row.
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How many people sit between R and V?
