UPSC CSE Prelims
Seating Arrangement Previous Year Questions (PYQs)
Practice solved questions for Seating Arrangement with detailed step-by-step solutions, key insights, and trend analysis for UPSC CSE PRELIMS.
Solved Previous Year Questions
Filter & practice questions topic-wise
Eight persons $P$, $Q$, $R$, $S$, $T$, $U$, $V$ and $W$ sit around a round table in eight different seats placed with equal distance between any two consecutive seats. Both $P$ and $R$ are adjacent to $Q$. Both $T$ and $R$ are adjacent to $S$. Both $U$ and $W$ are adjacent to $V$. $S$ and $W$ are on opposite chairs. If while going in the clockwise direction around the table from $P$, one meets $R$ before $T$, then how many persons shall $Q$ cross while moving in the clockwise direction around the table before meeting $W$?
Detailed Explanation:
Constraints: P-Q-R are consecutive (Q between P & R); T-S-R are consecutive (S between T & R); U-V-W are consecutive (V between U & W); S and W are opposite (4 seats apart in 8-seat circle); moving clockwise from P, R comes before T.
This gives us a 5-person block P-Q-R-S-T and a 3-person block. Since S and W are opposite and clockwise from P we meet R before T, we get: Position 1:P, 2:Q, 3:R, 4:S, 5:T, 6:U, 7:V, 8:W (S at 4, W at 8 = opposite).
Moving clockwise from Q(2) to W(8), Q crosses positions 3,4,5,6,7 = R, S, T, U, V = 5 persons.
Therefore, Q crosses 5 persons, making Option 1 the correct answer.
🧐 Not Sure What to Study Next?
Get a personalised study plan based on your goals, time and revision needs.
Related Topics in CSAT (Civil Services Aptitude Test)
Frequently Asked Questions
Common questions about Seating Arrangement in UPSC CSE PRELIMS