Circular Seating Logic
Analyze the seating arrangement of six students (P, Q, R, S, T, U) around a circular table facing the centre.
Clue Breakdown & Deduction
- Arrangement: 6 people, circular, facing centre.
- Clue 1: P is 2nd right of Q. Let's denote positions clockwise. If Q is at position 1, P is at position 3. (Q _ P ...)
- Clue 2: S neighbours Q and R. This implies the sequence Q-S-R or R-S-Q.
- Clue 4: T neighbours P and R. This implies the sequence P-T-R or R-T-P.
- Combining Clues: From Clue 1 (Q at 1, P at 3). Clue 2 means S must neighbour Q (position 1), so S could be at 6. If S is at 6, it must also neighbour R, placing R at 5. The sequence becomes Q _ P _ R S. Clue 4 states T neighbours P (at 3) and R (at 5). The only position between 3 and 5 is 4, so T must be at 4. The arrangement is now Q _ P T R S.
- Clue 3: U is 3rd left of R. R is at position 5. Counting left (counter-clockwise): position 4 (T), position 3 (P), position 2 (U). This places U at position 2.
- Final Order (Clockwise): The complete arrangement is Q - U - P - T - R - S.
Identifying P & Q's Neighbour
The question asks for the student who is an immediate neighbour to both P and Q.
- Based on the deduced arrangement Q-U-P-T-R-S:
- The neighbours of P are U (position 2) and T (position 4).
- The neighbours of Q are S (position 6) and U (position 2).
- The student common to both lists of neighbours is U.
Conclusion: U is the immediate neighbour of P and Q.
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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Consider that:
1. A is taller than B.
2. C is taller than A.
3. D is taller than C.
4. E is the tallest of all.
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On the basis of the information given, this year's paper is most likely to contain a question on
