49 practice questions on Seating Arrangement from the Logical Reasoning section of the UPSC Prelims syllabus.
49 come with a written explanation and 11 are actual previous year questions.
Try the sample set below - the answer stays hidden until you ask for it.
1 Easy24 Medium24 Hard11 from past papers
Sample questions
Q1
Previous year questionhard
Consider the given information and answer the three items that follow.
Six boxes A, B, C, D, E and F have been painted with six different colours viz., violet, indigo, blue, green, yellow and orange and arranged from left to right (not necessarily either kept or painted with the colours in the same order). Each box contains a ball of any one of the following six games: cricket, hockey, tennis, golf, football and volleyball (not necessarily in the same order). The golf ball is in violet box and is not in the box D. The box A which contains tennis ball is orange in colour and is at the extreme right. The hockey ball is neither in box D nor in box E. The box C having cricket ball is painted green. The hockey ball is neither in the box painted blue nor in the box painted yellow. The box C is fifth from right and next to box B. The box B contains volleyball. The box containing the hockey ball is between the boxes containing golf ball and volleyball.
Which one of the following boxes contains the golf ball?
AF
BE
CD
DNone of the above
Show answer and explanation
Correct answer: B - E
Box A holds tennis and box C holds cricket, so the remaining games (hockey, golf, football, volleyball) belong to B, D, E, F. Box B holds volleyball. Hockey is not in D or E, so hockey is in F. Golf is not in D, so among D and E the golf goes to E and football to D. Therefore the golf ball is in box E (which is the violet box). The hockey ball (F) lies between golf (E) and volleyball (B) in the row, consistent with the arrangement D-C-B-F-E-A.
Q2
Previous year questionmedium
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.
Which of the following must be true?
1. D is seated next to B.
2. E is seated next to A.
Select the correct answer from the codes given below:
A1 only
B2 only
CBoth 1 and 2
DNeither 1 nor 2
Show answer and explanation
Correct answer: C - Both 1 and 2
Fix A at one seat. Its two neighbours are positions adjacent to A; the remaining two seats are 'two seats from A'. C must occupy one neighbour of A (condition i). B cannot be a neighbour of A (condition iii), so B sits in one of the two far seats. D is two seats from A, so D also sits in a far seat; the two far seats are adjacent to each other, so D and B end up next to each other, making statement 1 true. That leaves the other neighbour of A for E (since C took one neighbour), so E is next to A, making statement 2 true. Both statements must be true. Official UPSC 2013 key: (c).
Q3
Previous year questionhard
The plan of an office block for six officers A, B, C, D, E and F is as follows: Both B and C occupy offices to the right of the corridor (as one enters the office block) and A occupies an office to the left of the corridor. E and F occupy offices on opposite sides of the corridor but their offices do not face each other. The offices of C and D face each other. E does not have a corner office. F's office is further down the corridor than A's, but on the same side.
Who is/are F's immediate neighbour(s)?
AA only
BA and D
CC only
DB and C
Show answer and explanation
Correct answer: A - A only
From the constraints, the left side (entering) holds A, F and D, and the right side holds B, E and C. C and D face each other, so D is opposite C; E is the middle (non-corner) office on the right. E and F are on opposite sides and must not face each other, so F is not directly opposite E. F is further down than A on the same (left) side. The left-side order works out as A, F, D, making F's only immediate neighbour A (with D at the far corner not adjacent to F in the arrangement that satisfies E not facing F). Hence the answer is A only.
Q4
Previous year questionhard
Eight students A, B, C, D, E, F, G and H sit around a circular table, equidistant from each other, facing the centre of the table, not necessarily in the same order. B and D sit neither adjacent to C nor opposite to C. A sits in between E and D, and F sits in between B and H. Which one of the following is definitely correct?
AB sits in between A and G
BC sits opposite to G
CE sits opposite to F
DNone of the above
Show answer and explanation
Correct answer: D - None of the above
Place A, then form the forced trios A between E and D (E-A-D) and F between B and H (B-F-H), with C and G filling the rest, while B and D avoid being adjacent or opposite to C. A brute-force check over all eight seats yields several valid arrangements (e.g. A,D,G,B,F,H,C,E and A,D,H,F,B,G,C,E). Testing each option: 'B between A and G', 'C opposite G', and 'E opposite F' each hold in some arrangements but fail in others, so none is DEFINITELY correct. Therefore the answer is None of the above.
Q5
Previous year questionhard
The plan of an office block for six officers A, B, C, D, E and F is as follows: Both B and C occupy offices to the right of the corridor (as one enters the office block) and A occupies an office to the left of the corridor. E and F occupy offices on opposite sides of the corridor but their offices do not face each other. The offices of C and D face each other. E does not have a corner office. F's office is further down the corridor than A's, but on the same side.
If E sits in his office and faces the corridor, whose office is to his left?
AA
BB
CC
DD
Show answer and explanation
Correct answer: C - C
Left side (entering): A, then F further down, plus one more. Right side: B and C, plus one more. C and D face each other, so D is on the left opposite C. So left = A, F(?), D and right = B, C, plus E. E and F are on opposite sides; E is not a corner office, so E sits in the middle of the right side, between B and C. The three left-side offices are A, D, F and three right-side are B, E, C in order. When E (right side) faces the corridor (turning to look left across), the office to E's left on the same side is C. Thus C is to E's left. A, B and D are ruled out by the seating positions derived above.
Q6
Previous year questionhard
Consider the given information and answer the three items that follow.
Six boxes A, B, C, D, E and F have been painted with six different colours viz., violet, indigo, blue, green, yellow and orange and arranged from left to right (not necessarily either kept or painted with the colours in the same order). Each box contains a ball of any one of the following six games: cricket, hockey, tennis, golf, football and volleyball (not necessarily in the same order). The golf ball is in violet box and is not in the box D. The box A which contains tennis ball is orange in colour and is at the extreme right. The hockey ball is neither in box D nor in box E. The box C having cricket ball is painted green. The hockey ball is neither in the box painted blue nor in the box painted yellow. The box C is fifth from right and next to box B. The box B contains volleyball. The box containing the hockey ball is between the boxes containing golf ball and volleyball.
Which of the following statements is/are correct?
AD is painted yellow
BF is painted indigo
CB is painted blue
DAll of the above
Show answer and explanation
Correct answer: D - All of the above
Fixed colours: A = orange (tennis), C = green (cricket), E = violet (golf). The leftover colours indigo, blue, yellow go to B, D, F. Box F holds hockey, and hockey can be in neither a blue nor a yellow box, so F must be indigo. That leaves blue and yellow for B and D. The official key resolves B = blue and D = yellow, so all three statements (D yellow, F indigo, B blue) are correct, making 'All of the above' the answer.
Q7
Previous year questionmedium
Four children are sitting in a row. A is occupying the seat next to B but not next to C. If C is not sitting next to D, who is/are occupying seat/seats adjacent to D?
AB
BA
CB and A
DImpossible to tell
Show answer and explanation
Correct answer: B - A
There are four seats. A must sit beside B but not beside C, and C must not sit beside D. Test the arrangement C, B, A, D. Here A is next to B (good) and not next to C (good), and C (seat 1) is not next to D (seat 4) (good). All conditions hold. The only person next to D (seat 4) is A (seat 3). The mirror arrangement D, A, B, C also satisfies every condition, and there too the neighbour of D is A. So in any valid seating the seat adjacent to D is occupied by A.
Q8
Previous year questionhard
Six persons A, B, C, D, E and F are sitting equidistant from each other around a circular table (facing the centre of the table).
Consider the Question and two Statements given below :
Question : Who is sitting on the immediate left of A?
Statement-1 : B is sitting opposite to C and D is sitting opposite to E.
Statement-2 : F is sitting on the immediate left of B.
Which one of the following is correct in respect of the Question and the Statements?
AStatement-1 alone is sufficient to answer the Question
BStatement-2 alone is sufficient to answer the Question
CBoth Statement-1 and Statement-2 are sufficient to answer the Question
DBoth Statement-1 and Statement-2 are not sufficient to answer the Question
Show answer and explanation
Correct answer: D - Both Statement-1 and Statement-2 are not sufficient to answer the Question
Statement 1 fixes the three opposite pairs (B-C, D-E, and by elimination A-F) but not their rotational order, so it alone cannot name A's left neighbour. Statement 2 (F immediately left of B) alone is also insufficient. Combining them, A sits opposite F, and A's two neighbours turn out to be C and one of D/E; since Statement 1 does not say which of D or E sits where, A's immediate-left seat is occupied by D or E ambiguously. Thus even both statements together cannot identify who is on A's immediate left.
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