Campus Recruitment – Logical Reasoning – Seating Arrangement

Campus Recruitment – Logical Reasoning – Seating Arrangement

Concepts

Seating arrangement or complex arrangement is one of most important topic for Campus Recruitment tests.
In this type of questions, information about the seating arrangement of the persons or things is given in the form of a puzzle. You have to arrange the things in proper seating order by understanding the given logical statements and answer the question that follow. Problems on seating arrangement are mainly two types. They are
1) Linear arrangement
2) Circular arrangement

1) Linear arrangement: In this type, there exists left end and right end of the seating. This arrangement looks like a row or a line.

Here, right side of ’A’ are B, C, D, E, F and left side of ‘A’ is no one.

2) Circular Arrangement: In this type, it is not possible to say what is right end and left end (or) starting or ending points.

Tips to solve:
1) Read the given information and find an initial clue which is origin of the information.
2) If a statement does not give any clue to arrange, then note it down for further use. Use that information whenever it is required for proper arrangement.
3) Do not assume any condition on your own while solving the problem.
4) Be careful while choosing the correct clue to start.
5) If you sec the word like who or which then consider the second person in place of who/ which.
Example: Consider the statement, ‘G’ sits exactly opposite to B who is immediate right of ‘H’.
In this statement, the word who refers to B.
6) If you see the word and/ is/ but then consider first person in place of these words.
Example: Consider the statement, ‘A is opposite to B and is sitting on the left of C.
In this statement, the word and refers to A.

Conceptual Examples

(I) 5 friends namely A, B, C, D, E are sitting in a row but not in the same order. D is not the neighbor of either A or E. E is not at the center. B sits at one end and third to the right of E (All are facing North).

1) Who sits exactly in the middle of the row?
a) E b) D c) B d) C e) none of these

2) Who sits at extreme ends?
a) CD b) EC c) DC d) EB e) AB

3) What is the position of B with reference to A?
a) 4th right b) 4lh left c) 3rd left d) 3rd right e) 2nd right

4) In which of the following pairs, first person sits immediate right of second person?
a) AE b) EC c) CD d) BD e) none of these

5) Who are the neighbors of C?
a) AE b) ED c) BD d) CD e) None
Explanation: In the given information, last point gives us a clue. i.e. B sits at one end and third to the right of E. B cannot be at left end because E should be left of B which is not possible. So, B sits at right end. D is not the neighbor of either A or E. So, D should sit at immediate left of B. C should sit at the center. Finally A sits at left end.

1) d; C sits in the middle of the row.
2) e; A and B sits at extreme ends.
3) a; The position of ‘B’ with reference to ‘A’ is 4th right.
4) d; In the given pairs only B sits immediate right of D.
5) b; The neighbor of ‘C are E and D.

(II) Six persons of family P, Q, R, S, T, U are sitting around a circular table to have dinner but not in the same order. P sits opposite to Q and immediate right of R. T is not the neighbor either P or U. Q sits second to the right of S and immediate left of U. S sits between T and P.
1) Who sits to the immediate left of Q?
a) T b) U c) R d) S e) P

2) Who are neighbors of U?
a) SP b) TS c) QR d) PR e) TR

3) In which of the following pair, second person sits immediate right of first person?
a) QU b) RU c) QT d) TS e) None of these

4) In which of the following pairs, first person sits between second and third person?
a) SPR b) TSQ c) QUR d) TSP e) RUQ

5) If we interchange the positions of S and U, T and R, P and Q then who who sits to the immediate right of P?
a) S b) Q c) U d) T e) R
xplanation: There is a clue in the first point itself, i.e. ‘P is opposite to Q and P is immediate right ofR’. Starting with this clue, we can arrange all the persons.
Observe the diagram below.

1) a; T sits immediate left of Q.
2) c; Q and R are the neighbors of U.
3) a; U sits immediate right of Q.
4) b; T sits between S and Q.
5) a; After interchanging the positions, will be immediate right of

Exercise

Read the following information carefully and answer the questions that follow.

(I) Eight friends are sitting around a circular table facing the center. Their names are A, B, C, D, E, F, G, H.
• G sits opposite to B who is immediate right of H.
• E sits between A and H but not opposite to F.
• D is not neighbor of either G or E.
• C sits exactly opposite to E.
• F is not immediate neighbor of B.
1) Who sits exactly opposite to A?
a) F b) G c) D d) B e) E
2) In the following pairs, who are the neighbors of E?
a) BH b) AH c) GH d) CF e) DH
3) Which person sits exactly middle of B and E?
a) F b) H c) D d) G e) A
4) If the positions of A and G, H and E, D and B, C and F are interchanged then who sits third to the right of C?
a) B b) A c) D d) H e) F
5) Which of the given statement is superfluous ?
a) (i) b) (ii) c) (iii) d) (iv) e) All are required

(II) 9 friends, A, B, C, D, E, F, G, H, I are staying in 3 different floors of an apartment. Each floor has 3 plots sequentially.
• G stays in the first floor and not adjacent to either D or E.
• B and H will not stay in the same floor.
• Neighbors of B are A and C. C stays in next floor of E who lives in the second floor.
• I’s plot is to the second left of H’s plot in first floor.
• B stays two floors above to G; G’s plot and B’s plot are in the same column.
• F is in second plot in the second floor from left end.
• D stays above to the I’s floor and plot.

6) Who stays below to A’s plot?
a) F b) D c) E d) B e) C

7) In which of the following floors, G do not stay?
a) 1 and 2 b) 2 and 3 c) 1 and 3
d) none of these e) Cannot be determined

8) Who are the neighbors of F in the same floor?
a) DA b) CE c) DE d) IH e) none of these

9) Which of the following group of persons stay in the same floor?
a) AGI b) BFG c) CEH d) EDF e) ABE

10) Which of the given statement is superfluous?
a) First b) Second c) Third d) Fifth e) Seven

(III) Nine friends P, Q, R, S, T, U, V, W, X are sitting on a bench in a class facing to the teacher. Q sits exactly middle of the bench. X sits at the left end and to the second left of S. Neither P nor R is the neighbor of X or S. W sits third to the left of R and third to the right of S. U sits between S and Q. P is not neighbor of T but neighbor R at R’s immediate left.

11) Who sits at right end of the bench?
a) P b) R c) X d) T e) V

12) Who has ‘W’ to his immediate left?
a) Q b) P c) S d) V e) none of these

13) In the following, all groups follow a particular rule except one. Find out which group does not follow?
a) XS b) SQ c) QV d) VR e) TS

14) If the positions of first and last, second and second last, third and third last and so on starting from left end are interchanged, who will sit second to the right of second person from right end?
a) X b) S c) V d) P e) no one

15) The persons who sit at even positions are interchanged with their immediate left persons. Then who sits in the middle of the bench?
a) U b) W c) T d) P e) Cannot be determined

(IV) Seven friends P, Q, R, S, X, Y and Z are sitting around a circle. Except X all other are sitting at equal distances from each other. R is sitting at two places right from S, who is an immediate right of Q. P is at an angle of 90° from X and at an angle of 120° from Q who is just opposite to R and sitting right of X. Z is opposite to Y and left of X.

16) Who sits at 30° left from X?
a) P b) Z c) Q d) Y e) R –

17) Who sits exactly opposite to X?
a) R b) Q c) S d) Z e) None

18) How many degrees distance between Z and Y?
a) 90° b) 30° c) 60° d) 180° e) Cannot be determined

19) Who is the 3rd right of Z?
a) S b) X c) R d) Y e) none

20) How many persons sits between R and Y starting From R right side?
a) 6 b) 5 c) 4 d) 0 e) none of these

(V) Four families have attended a party. Each family consists of a husband and a wife. Names of male persons are A, B, C, D and names of female person are P, Q, R, S. All are sitting around a table which is in square shape, facing to the center in such a way that no two male persons or no two female persons sit adjacent to each other. All female members sit at middle of four sides and all male members sits at the corners of the table. C sits exactly opposite to D and immediate right of Q. Every female person sits right side of her husband. Either R or P is not the wife of C. Q is wife of B and sits opposite to P.

21) Whose wife is R?
a) B b) C c) A d) D e) none of these

22) Who is the husband of P?
a) D b) B c) A d) C e) Cannot be determined

23) Who sits exactly opposite to S?
a) R b) Q c) A d) D e) B

24) What is the angle between R and Q?
a) 30° b) 120° c) 90° d) 180° e) Cannot be determined

25) Which is the odd pair in the following?
a) D-R b) B-Q c) C-S d)A-P e) D-P

(VI) Six friends A, B, C, D, E, F study six different subjects viz., Telugu, Hindi, English, Malayalam, Kannada and Tamil. They sit around a circular table facing to center, but not necessarily in the same order. E studies Hindi and is the second right of the person who study the Kannada. B sits exactly opposite to C who study Telugu. D is not neighbor of either B or A but studies Malayalam. The person who study English sits second to the left of the person who study Malayalam and immediate left of E. A does not study Kannada.

26) Who study Kannada?
a) A b) B c) E d) D e) F

27) The neighbors of the person who study Telugu are?
a) AD b) ED c) BE d) FA e) none of these

28) Who sits exactly opposite to the person who study Malayalam?
a) A b) F c) D d) B e) E

29) All the pairs in the below choices follow a particular rule except one, find out such pair.
a) EA b) BC c) FD d) DB e) none of these

30) If we Interchange only subjects of the persons who study Telugu with Kannada, Kannada with Hindi, Hindi, with Telugu and so on. Then what subject will A study?
a) Malayalam b) English c) Hindi d) Tamil e) Telugu

(VII) Read the following information carefully and answer the questions that follow
Jayant, Kamal, Namita, Asha will get an item for his/her birthday out of Bengali sweets. They have their birth dates from January to May, each member in one of these months. Each one likes one particular item for his/her birthday out of Bengali sweets, Chocolates, Pastries, Ice Cream and Dry Fruits. The one who likes Pastries is bom in the month which is exactly middle in the months given. Asha does not like Ice cream but brings Chocolates for Jayant in February. Tanmay who is found of Bengali sweets is bom in the next month immediately after Namita. Namita does not like Dry fruits or Ice cream.

31) What is the choice of Asha?
a) Pastries b) Dry fruits
c) Bengali sweets d) Cannot be determined

32) Which of the following combinations is true for Jayant?
a) March – Pastries b) February – Pastries
c) February – Ice cream d) none

33) What is the choice of Kamal?
a) Ice cream b) Bengali sweets
c) Dry fruits d) Cannot be determined

34) In which month was Kamal born?
a) January b) May
c) January or May d) Data inadequate

(VIII) A, B, C, D, E and F stand for 6 ranks from 1 to 6 according to their hfeights not necessarily be in the same order.
(i) A, D are in the middle of the sequence.
(ii) B is the successor of C.
(iii) C, E are the first and last ranks.

35) Who is 4th ranker?
a) A b) B
c)C d) D

36) Who is 5th ranker?
a) F b) B
c)C d) E

37) Who is 3rd ranker?
a) A b) B
c)C d) D

38) Who is the tallest?
a) B b) C
c) D d) E

(IX) Harsha, Gopal, Vishnu, Vimala, Smitha and Indhu are teaching the subjects geography, history, English, mathematics, physics and chemistry not in the same order from 10 am. to 12 am. in an institution from Monday to Saturday.
(i) One teaches one subject on one day.
(ii) Smitha teaches English on Thursday or Saturday.
(iii) Vimala teaches physics or history on Friday or Saturday.
(iv) Vishnu neither teaches chemistry nor geography. But he teaches on Monday.
(v) Indhu teaches history on Tuesday.
(vi) Gopal teaches English or geography on Friday.

39) What Harsha teaches and on which day?
a) Physics, Monday b) Maths, Saturday
c) Chemistry, Wednesday d) History, Friday e) Geography, Thursday.

40) Vishnu teaches __on__ .
a) Mathematics, Monday b) English, Thursday
c) History, Tuesday d) Chemistry, Saturday
e) Physics, Friday

41) Gopal teaches which subject on which day?
a) Mathematics, Saturday b) Geography, Friday c) English Literature, Monday d) Physics, Wednesday e) History, Thursday

42) Who teaches Physics and on which day?
a) Smitha, Monday b) Vishnu, Tuesday
c) Harsha, Wednesday d) Gopal, Thursday
e) Vimala, Saturday

43. Who teaches English and on which day?
a) Indhu, Saturday b) Gopal, Wednesday
c) Harsha, Friday d) Smitha, Thursday
e) Vishnu, Monday

(X) There are six lecturers A, B, C, D, E and F in a college. Every lecturer teaches two subjects, one compulsory subject and one optional subject. D’s optional subject is History while three others have it as compulsory subject. E and F have Physics as one of their subjects. F’s compulsory subject is Mathematics which is an optional subject of both C and E. History and English are A’s subjects, but in terms of compulsory and optional subjects, they are just reverse of those of D’s . Chemistry is an optional subject of only one of them. The only female lecturer in the college has English as her compulsory subject.

44) What is C’s compulsory subject?
a) History b) Physics c) Chemistry d) English

45) Who is a female member in the group?
a) A b) B c) C d) D

46) Which of the following has same compulsory and optional subjects as of F’s ?
a) D b) E c) A d) none of these

47) Disregarding what is compulsory and what is optional subject, who has the same combination of two subjects as that of F?
a) A b) B c) E d) D

48) Which of the following groups has History as the compulsory subject?
a) A, C, D b) B, C, D c) C, D d) A, B, C

(XI) Read the following information carefully and answer the questions below it.
Madhu and Shobha are good in Dramatics and Computer Science.
Anjali and Madhu are good in Computer Science and Physics.
Anjali, Poonam and Nisha are good in Physics and Mathematics.
Nisha and Anjali are good in Physics and Mathematics. Poonam and Shobha are good in History and Dramatics.

49) Who is good in Computer Science, History and Dramatics?
a) Anjali b) Madhu c) Shobha d) Nisha

50) Who is good in Physics,. Dramatics and Computer Science?
a) Shobha b) Poonam c) Madhu d) Anjali

51) Who is good in Physics, History and Dramatics?
a) Poonam b) Shobha c) Madhu d) Anjali

52) Who is good in History, Physics, Computer Science and Mathematics?
a) Poonam b) Nisha c) Madhu d) None

53) Who is good in Physics, History and Mathematics but not in Computer Science?
a) Madhu b) Nisha c) Poonam  d) Anjali

Explanations

1) c; D sits exactly opposite to A.

2) b; The neighbors of E are A and H.

3) b; H sits exactly middle of B and E

4) d; After interchange, H will be third right of C.

5) c; Statement-(iii) is not require to arrange properly.

6) b; D stays below of A’s plot.

7) b; G stays in 1st floor, so he will not stay in 2nd and 3rd floor.

8) c; F stays in the 2nd floor and his neighbors are D, E.

9) d; E, D and F stay in the same floor.

10) e; Statement-(vii) is not necessary to solve this question.

11) b; R sits at the right end of the bench.
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12) d; W is immediate left of V.

13) e; Except TS all are arranged in alternate positions.

14) e; After interchanging, there will be no person at the 2nd right of 2nd person from right end.

15) a; After interchanging, W is in the middle of bench.

16) b; Z sits at 30 left from X.

17) e; No one sits exactly opposite to X.

18) d; Z and Y are at 180° distance to each other.

19) a; 3rd right of Z is S.

20) b; Total number of persons between R and Y from R’s right side = 5.

21) d; R is the wife of D.

22) c; A is the husband of R

23) a; R sits exactly opposite to S.

24) c; The angle between R & Q is 90°.

25) e; D-P is an odd pair.

26) e; F studies Kannada.

27) a; The neighbors of C, who study Telugu are A & D.

28) b; D studies Malayalam, the opp person to ‘D’ is F.

29)d; Except DB, all pairs are opposite to each other.

30) a; After interchanging positions in anti-clockwise, ‘A’ gets Malayalam