DSSSB TGT / PGT · Topic-wise previous year questions
Reasoning Previous Year Questions
87 Reasoning questions asked in DSSSB TGT / PGT previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
A67-469
B69-483
C81-567
D87-609
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Correct answer: (A) 67-469
Explanation
In 69, 81 and 87 both numbers are divisible by 3 (second = first × 7, a multiple of 21). In 67-469 neither 67 nor 469 is divisible by 3, so it is the odd pair.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.
Statements:
A. All troupes are flowers.
B. All flowers are jungles.
C. All jungles are gangs.
Conclusions:
I. Some gangs are juggles.
II. Some jungles are flowers.
III. All troupes are jungles.
AOnly conclusions II and III follow.
BOnly conclusions I and II follow.
CAll the conclusions I, II and III follow.
DOnly conclusion III follows.
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Correct answer: (C) All the conclusions I, II and III follow.
Explanation
Troupes ⊂ flowers ⊂ jungles ⊂ gangs. So all troupes are jungles (III), some jungles are flowers (II), and some gangs are jungles (I, 'juggles' is a typo). All three follow.
If A + B means A is the brother of B, A − B means A is the sister of B and A × B means A is the father of B, then how is P related to S in the expression 'P × Q − R + S'?
AP is the father of S
BP is the son of S
CP is the brother of S
DP is the uncle of S
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Correct answer: (A) P is the father of S
Explanation
P × Q: P is father of Q; Q − R: Q is sister of R; R + S: R is brother of S. Q, R and S are siblings, so P is the father of S.
Read the given statement and conclusions carefully. Assuming that the information given in the statement is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statement.
Statement: Health is the best wealth of an individual.
Conclusions:
I. People do not think too much about health while making efforts to earn.
II. Wealth is of no use without health.
AOnly conclusion I follows.
BEither conclusion I or II follows.
COnly conclusion II follows.
DBoth I and II follow.
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Correct answer: (A) Only conclusion I follows.
Explanation
Calling health the 'best wealth' is a reminder that people tend to neglect health while chasing money, so I is taken to follow. II is an extreme claim ('of no use') that the statement does not make.
ABCDEFGHIJKLMNOPQRSTUVWXYZ
If the 1st, 3rd, 5th, 8th, 12th, 15th and 18th letters of the English alphabet (given above) are chosen to form a meaningful word (name of a disease), which letter will come in the middle of all? Each letter must be used and only once.
AA
BE
CC
DL
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Correct answer: (D) L
Explanation
The letters are A, C, E, H, L, O, R, which form CHOLERA. Its middle (4th) letter is L.
Four letter-cluster pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
AINSPIRING: KMUOKQKMI
BCABALETTA: ABZBJFRUY
CFACULTIES: HZETNSKDU
DABANDONED: CACMFNPDF
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Correct answer: (B) CABALETTA: ABZBJFRUY
Explanation
In the other three pairs the letters change alternately by +2 and −1 (e.g. I→K, N→M). In CABALETTA the pattern is −2, +1 (C→A, A→B), so it is different.
Ramesh secured the 15th position from the top and is just 3 positions behind of his best friend Arvind in a class of 50 students. What will be the rank of Arvind from the bottom?
A36th
B40th
C39th
D38th
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Correct answer: (C) 39th
Explanation
Arvind is 3 places ahead of Ramesh, so he is 12th from the top. From the bottom: 50 − 12 + 1 = 39th.
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
37 * 42 * 21 * 37 * 67 * 44
A question is given followed by two statements labelled I and II. Identify which of the statements is/are sufficient to answer the question.
Question: Who is the shortest of all?
Statements:
I. Sachin is taller than Mohan and shorter than Vipin.
II. Devika is shorter than Gangan.
ABoth the statements I and II are insufficient to answer the question.
BEither statement I alone or statement II alone is sufficient to answer the question.
CStatement II alone is sufficient to answer the question, while statement I alone is not sufficient to answer the question.
DStatement I alone is sufficient to answer the question, while statement II alone is not sufficient to answer the question.
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Correct answer: (A) Both the statements I and II are insufficient to answer the question.
Explanation
Statement I only shows Mohan is shorter than Sachin and Vipin; II only compares Devika and Gangan. Even together the two groups are not linked, so the shortest cannot be found.
Read the given statement and courses of action carefully. Assuming that the information given in the statement is true, even if it appears to be at variance with commonly known facts, decide which of the given courses of action logically follow(s) from the statement.
Statement: In the last few years, the condition of roads in the state has continuously deteriorated.
Courses of Action:
I. State Government should take strict action against all the employees of Road Development Authority.
II. State Government should instruct Road Development Authorities to take regular inspection and necessary action to maintain roads.
AOnly II follows.
BOnly I follows.
CBoth I and II follow
DEither I or II follows.
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Correct answer: (A) Only II follows.
Explanation
Regular inspection and maintenance (II) is a practical step to fix the roads. Punishing all employees of the authority (I) is a harsh blanket action without proof of their fault, so it does not follow.
How many even numbers are immediately followed by an odd number but not immediately preceded by an even number in the following series?
3 4 3 2 5 6 7 4 3 4 5 6 7 8 9 6 5 4 3 2 2 4 5 6 7 8 9 9 7 6 0 7 6 5 4 3
A13
B14
C12
D11
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Correct answer: (A) 13
Explanation
Checking each even number that has an odd number after it and no even number before it gives 13 such numbers.
In the early morning after sunrise, the football coach of Argentina is discussing the strategies for the next match with Messi on the ground such that the coach's shadow falls exactly in front of Messi. In which direction is Messi facing?
ASouth
BNorth
CEast
DWest
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Correct answer: (C) East
Explanation
After sunrise the sun is in the east, so shadows fall towards the west. The coach's shadow falls in front of Messi, so Messi stands west of the coach facing him, i.e. towards the east.
There are six persons, P, Q, R, S, T and U. T is older than no one. S is older than P. Q is younger than P. U is older than T but younger than Q. S is older than R. Who is the third youngest among all?
AQ
BP
CR
DU
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Correct answer: (A) Q
Explanation
S > P > Q > U > T, with R only known to be younger than S (placed above P). Counting from the youngest: T, U, then Q, so Q is third youngest.
Select the option with the second term related to the first term in the same way as the second term is related to the first term in the given pair.
MATTER : BNUUSF
AHOTELS: PIFTUM
BHOTELS PIFUTM
CHOTELS: PIFVMT
DHOTELS: PFIUTM
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Correct answer: (B) HOTELS PIFUTM
Explanation
MATTER: each letter +1 gives NBUUFS, then each pair of letters is swapped: BN UU SF. HOTELS +1 = IPUFMT, swapping pairs gives PIFUTM.
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
XGC, UHD, RIF, OJI, ?
ALKL
BLKN
CLKM
DLLM
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Correct answer: (C) LKM
Explanation
First letters go back by 3 (X, U, R, O, L), second letters go forward by 1 (G, H, I, J, K), and third letters go forward by +1, +2, +3, +4 (C, D, F, I, M). So the next term is LKM.
Which of the following letters is the 7th to the left of the 11th letter from the right end of the series?
(Left) A D F G W R W S F G B C S X A D G H J K L Y O R E D H K H (Right)
AB
BC
CG
DS
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Correct answer: (B) C
Explanation
The series has 29 letters, so the 11th from the right is the 19th from the left (J). The 7th letter to its left is the 12th from the left, which is C.
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
19 * 23 * 221 * 17 * 89 * 361
A÷, +, ×, −, =
B+, ÷, ×, −, =
C×, +, ÷, −, =
D−, ÷, +, ×, =
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Correct answer: (C) ×, +, ÷, −, =
Explanation
19 × 23 + 221 ÷ 17 − 89 = 437 + 13 − 89 = 361, so the signs ×, +, ÷, −, = balance the equation.
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the following equation.
45 * 45 * 45 * 45 * 45 * 1979
A+, ÷, =, ×, −
B−, ÷, =, +, ×
C÷, +, ×, −, =
D×, +, ÷, −, =
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Correct answer: (A) +, ÷, =, ×, −
Explanation
45 + 45 ÷ 45 = 46 on the left, and 45 × 45 − 1979 = 2025 − 1979 = 46 on the right, so the order +, ÷, =, ×, − works.
In the evening, before sunset, X is facing towards the right hand side of the direction where his shadow is falling. He then turns right and walk 20 m. Then, he turns right again and walks 10 m. Then, he turns left and walks 10 m, and then turning right, he walks 20 m. Then, he turns right again and walks 30 m. At what distance and in which direction is X now from the starting point?
A30 m, north
B20 m, north
C30 m, south
D20 m, south
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Correct answer: (A) 30 m, north
Explanation
Before sunset the shadow falls east, so X faces south. His moves are 20 m west, 10 m north, 10 m west, 20 m north and 30 m east. The east-west moves cancel out (30 west, 30 east), leaving him 30 m north of the start.
Study the given information, statement and conclusions carefully, and decide which of the given conclusions logically follow(s) from the statement.
P # Q means P is greater than Q.
P $ Q means P is either greater than or equal to Q.
P = Q means P is smaller than Q.
Statement:
C $ E, F # C, D = E.
Conclusions:
I. C # D
II. E # D
AOnly conclusion II follows
BBoth conclusions I and II follow
COnly conclusion I follows
DEither conclusion I or II follows
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Correct answer: (B) Both conclusions I and II follow
Explanation
The statement means C ≥ E, F > C and D < E. So C ≥ E > D, which gives C > D (I follows), and E > D (II follows).
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
A16 - 72
B24 - 108
C18-81
D22 - 97
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Correct answer: (D) 22 - 97
Explanation
In every other pair the second number is 4.5 times the first (16 × 4.5 = 72, 24 × 4.5 = 108, 18 × 4.5 = 81). 22 × 4.5 = 99, not 97, so 22 - 97 is the odd one.
In a row of a picture hall where all are facing north, Khalid is 25th from the left end and Kapil is 29th from the right end. They interchange their seats, and Sham who is sitting 34th from the left end is sitting at the 5th place to the left of Khalid new position. How many persons are there in one row of the picture hall?
A56
B67
C76
D62
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Correct answer: (B) 67
Explanation
Khalid's new seat is Kapil's old seat, 29th from the right. Sham is 34th from the left and 5 places to the left of Khalid, so Khalid is 39th from the left. Total = 39 + 29 − 1 = 67.
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
A13 - 39
B27 - 81
C23 - 69
D17 - 51
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Correct answer: (B) 27 - 81
Explanation
In every pair the second number is 3 times the first, but in 13, 23 and 17 the first number is prime. 27 is not prime (both 27 and 81 are powers of 3), so 27 - 81 is the odd pair.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.
Statements:
A. Some dogs are goats.
B. All goats are peacocks.
C. All peacocks are eagles.
Conclusions:
I. Some peacocks are dogs.
II. All dogs are peacocks.
III. All eagles are peacocks.
AOnly conclusion I follows
BOnly conclusions II and III follow
COnly conclusions I and II follow
DAll the conclusions, I, II and III, follow
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Correct answer: (A) Only conclusion I follows
Explanation
Some dogs are goats and all goats are peacocks, so some dogs are peacocks, which means some peacocks are dogs (I follows). Not every dog has to be a goat, so II fails, and "all peacocks are eagles" does not reverse, so III fails.
In a row of 80 students, Ram is at the 15th position to the right of Rohit, who is at the 40th position from the right end. What will be the position of Ram from the left end?
A54th
B56th
C55th
D57th
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Correct answer: (B) 56th
Explanation
Rohit is 40th from the right, which is 80 − 40 + 1 = 41st from the left. Ram is 15 places to his right, so Ram is 41 + 15 = 56th from the left.
If
P # Q means P is the brother of Q,
P @ Q means P is the father of Q, and
P & Q means P is the sister of Q,
then how is A related to E in the expression A # B @ C & D # E?
APaternal uncle
BFather
CGrandfather
DMaternal uncle
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Correct answer: (A) Paternal uncle
Explanation
A is B's brother, B is C's father, C is D's sister, and D is E's brother. So C, D and E are B's children and A is the brother of E's father, which makes A E's paternal uncle.
A statement is given, followed by two courses of action numbered I and II. You have to assume everything in the statement to be true, and on the basis of the information given in the statement, decide which of the suggested courses of action logically follow(s) for pursuing.
Statement:
False cases on dowry are on the increase in the last few years.
Courses of Action:
I. Government should instruct the local police administration to properly verify dowry complaints before registering an FIR.
II. Local police should take strict action on false cases of dowry.
AOnly II follows
BOnly I follows
CEither I or II follows
DBoth I and II follow
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Correct answer: (D) Both I and II follow
Explanation
Since false cases are rising, checking complaints before registering an FIR (I) and acting strictly against false complaints (II) both tackle the problem directly, so both courses follow.
A statement is followed by two arguments in the given question. Choose the correct
option after deciding which of the arguments is a 'strong' argument and which is a
'weak' argument.
Statement: Should we repeat our clothes?
Argument:
I. Yes. It helps in developing a sustainable environment.
II. No. New clothes means new beginnings.
AOnly argument II is strong
BBoth I and II are strong arguments
CNeither I nor II argument is strong
DOnly argument I is strong
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Correct answer: (D) Only argument I is strong
Explanation
Argument I gives a real, relevant reason (re-using clothes reduces waste and supports sustainability). Argument II is an emotional, superficial claim with no practical basis, so it is weak.
In a certain code language, ‘LOMQG’ is written as ‘16’, ‘WTQMC’ is written as ‘19’. What
is the code for ‘LSOMI’ in that code language?
A18
B16
C17
D20
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Correct answer: (C) 17
Explanation
The code is the sum of the letter positions divided by 4: LOMQG = 12+15+13+17+7 = 64, 64/4 = 16; WTQMC = 76/4 = 19. LSOMI = 12+19+15+13+9 = 68, 68/4 = 17.
A series is given with one term missing. Select the correct alternative from the given
ones that will complete the series.
NRCH, IYNJ, FJUE, AQFB, ?
AXBMW
BQRST
CXTQR
DXMNO
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Correct answer: (A) XBMW
Explanation
First letters go N, I, F, A, X (-5, -3, -5, -3, wrapping A to X); second letters R, Y, J, Q, B (+7, +11 alternately); third letters C, N, U, F, M (+11, +7 alternately). Only XBMW fits.
In a certain code language, ‘STOPWARS’ is written as ‘POTSSRAW’, ‘LOGIPERT’ is
written as ‘IGOLTREP’. What is the code for ‘LAPTOPST’ in that code language?
ATAT POTSP
BTAT PPOTS
CTAPTSOPS
DT PALTSPO
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Correct answer: (D) T PALTSPO
Explanation
Each word is split into two 4-letter halves and each half is reversed: STOP to POTS, WARS to SRAW. LAPT becomes TPAL and OPST becomes TSPO, giving TPALTSPO.
A statement is followed by a set of conclusions in the given question. Identify which
conclusion follows logically from the following statement.
Statement:
Raveena goes to the gym daily, as her father has advised her to exercise.
Conclusion:
I. Raveena’s father cares for her daughter health.
II. Raveena is suffering from some chronic disease.
ABoth I and II follow
BOnly I follow
CNeither I nor II follow
DOnly II follow
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Correct answer: (B) Only I follow
Explanation
The father advising her to exercise shows he cares about her health, so I follows. Nothing in the statement suggests a chronic disease; daily exercise is advised for general fitness, so II does not follow.
Select that missing pair (Third number : Fourth number) which is related in the same
way as the first number is related to the second number and fifth number is related to
sixth number. (NOTE: Operations should be performed on the whole numbers, without
breaking down the numbers into its constituent digits. E.g.13 – Operations on 13 such
as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into
1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
442 : 633 :: ? :: 186 : 377
A313 : 504
B518 : 719
C111 : 292
D277 : 467
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Correct answer: (A) 313 : 504
Explanation
In each pair the second number is the first plus 191: 442 + 191 = 633 and 186 + 191 = 377. Likewise 313 + 191 = 504.
P, Q, R, S, T, U and V are seven friends sitting in a single row facing North. S is to the
immediate right of R. T and P are neighbours of U.Q is to the immediate left of R and
on second place from left most end. P is at the right most end.Who is sitting on the
immediate left of P?
AU
BR
CT
DS
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Correct answer: (A) U
Explanation
Q is 2nd from left with R just to its right, and S right of R, so positions 2-4 are Q, R, S. P is 7th, and U must sit between T and P, so U is 6th and T 5th. U is immediately left of P.
In the following question below are given some statements followed by some
conclusions based on those statements. Taking the given statements to be true even
if they seem to be at variance from commonly known facts. Read all the conclusions
and then decide which of the given conclusion logically follows the given statements.
Statements:
I. Some C are D.
II. Some D are E.
III. No E is G.
Conclusion:
I. Some E are C.
II. No D is G.
III. Some G are C.
ANeither conclusion follows
BOnly conclusion II follows
COnly conclusion I follows
DOnly conclusion III follows
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Correct answer: (A) Neither conclusion follows
Explanation
With only "some" links between C-D and D-E, no definite relation between E and C, or between C and G, can be drawn. "No E is G" does not mean no D is G, since some D may lie outside E. So none follows.
If A + B means ‘A’ is the husband of ‘B’, A – B means ‘A’ is the wife of ‘B’, A × B means
‘A’ is the mother of ‘B’, A ÷ B means ‘A’ is the son of ‘B’. If J ÷ P + K × M – R, then How
is P related to R?
AHusband
BWife’s brother
CFather
DWife’s father
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Correct answer: (D) Wife’s father
Explanation
J ÷ P: J is son of P. P + K: P is husband of K. K × M: K is mother of M. M − R: M is wife of R. So P is the father of M, who is R's wife; P is R's wife's father.
Select the option that is related to the fifth number cluster in the same way as the
second number cluster is related to the first number cluster and fourth number
cluster is related to third number cluster.
6 : 180 :: 8 : 448 :: 10 : ?
A900
B990
C800
D999
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Correct answer: (A) 900
Explanation
The rule is n² × (n − 1): 6² × 5 = 180 and 8² × 7 = 448. So 10² × 9 = 900.
How to use these DSSSB TGT / PGT Reasoning questions
Every question here was asked in a real DSSSB TGT / PGT paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full DSSSB TGT / PGT papers as timed tests to check your speed under exam conditions.