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DSSSB TGT / PGT · Reasoning

Syllogism Previous Year Questions

12 Syllogism (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.

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Attempt DSSSB TGT / PGT papers →All Reasoning questions

Other Reasoning topics

Alphabet & Number Series 35Direction Sense 14Blood Relations 13Coding-Decoding 13Mathematical Operations 10Classification 10Order & Ranking 10Seating Arrangement 9Statement & Arguments 8
Q1From DSSSB TGT Computer Science Full Mock Test 5
Statements: All A are B. All B are C. Conclusions: I. All A are C. II. Some C are A.
  1. AOnly I follows
  2. BNeither follows
  3. CBoth follow
  4. DOnly II follows
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Correct answer: (C) Both follow

Explanation

All A are B and all B are C → all A are C (I). Since all A are C, some C are A (II). Both follow.

Q2From DSSSB TGT Computer Science Full Mock Test 4
Statements: No pen is a pencil. All pencils are erasers. Conclusions: I. Some erasers are not pens. II. No eraser is a pen.
  1. AOnly II follows
  2. BOnly I follows
  3. CBoth follow
  4. DNeither follows
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Correct answer: (B) Only I follows

Explanation

Erasers that are pencils cannot be pens → some erasers are not pens (I). Other erasers may be pens → II does not follow.

Q3From DSSSB TGT Computer Science Full Mock Test 3
Statements: Some cats are dogs. All dogs are birds. Conclusions: I. Some cats are birds. II. All birds are dogs.
  1. AOnly I follows
  2. BOnly II follows
  3. CBoth follow
  4. DNeither follows
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Correct answer: (A) Only I follows

Explanation

The cats that are dogs are also birds → some cats are birds (I). II reverses 'all dogs are birds', which is not valid.

Q4From DSSSB TGT Computer Science Full Mock Test 2
Statements: All roses are flowers. No flower is a tree. Conclusions: I. No rose is a tree. II. Some trees are roses.
  1. ABoth follow
  2. BOnly I follows
  3. CNeither follows
  4. DOnly II follows
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Correct answer: (B) Only I follows

Explanation

All roses are flowers and no flower is a tree → no rose is a tree (I follows). II contradicts this.

Q5From DSSSB TGT Computer Science Full Mock Test 1
Statements: All pens are books. Some books are tables. Conclusions: I. Some pens are tables. II. Some tables are books.
  1. ANeither follows
  2. BBoth follow
  3. COnly I follows
  4. DOnly II follows
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Correct answer: (D) Only II follows

Explanation

'Some books are tables' can be reversed → 'Some tables are books' (II follows). Pens may or may not be tables → I does not follow.

Q6DSSSB TGT Computer Science, 25 Jun 2023, Shift 1 (8:30 AM)
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.
  1. AOnly conclusions II and III follow.
  2. BOnly conclusions I and II follow.
  3. CAll the conclusions I, II and III follow.
  4. 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.

Q7DSSSB TGT Computer Science, 25 Jun 2023, Shift 1 (8:30 AM)
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.
  1. AOnly conclusion I follows.
  2. BEither conclusion I or II follows.
  3. COnly conclusion II follows.
  4. 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.

Q8DSSSB TGT Computer Science, 24 Jun 2023, Shift 3 (4:30 PM)
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
  1. AOnly conclusion II follows
  2. BBoth conclusions I and II follow
  3. COnly conclusion I follows
  4. 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).

Q9DSSSB TGT Computer Science, 24 Jun 2023, Shift 3 (4:30 PM)
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.
  1. AOnly conclusion I follows
  2. BOnly conclusions II and III follow
  3. COnly conclusions I and II follow
  4. 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.

Q10DSSSB TGT Computer Science, 25 Jun 2023, Shift 3 (4:30 PM)
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: Some dogs are whites. Some whites are lights. All lights are candles. Conclusions: I. Some candles are dogs. II. Some candles are whites. III. Some lights are dogs.
  1. AOnly II follows.
  2. BI and II follow.
  3. COnly I follows.
  4. DIli follows.
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Correct answer: (A) Only II follows.

Explanation

"Some whites are lights" and "All lights are candles" give "Some candles are whites", so II follows. Nothing definitely links dogs to lights or candles, so I and III do not follow.

Q11DSSSB TGT Computer Science, 25 Jun 2023, Shift 2 (12:30 PM)
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 shirts are curtains. B. Some shirts are pens. C. Some pens are cups. Conclusions: I. No cups are shirts. II. No cups are curtains. III. No curtains are pens.
  1. ANone of the conclusions follow.
  2. BOnly conclusion III follows.
  3. COnly conclusions II and III follow.
  4. DOnly conclusions I and II follow.
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Correct answer: (A) None of the conclusions follow.

Explanation

Shirts and pens only partly overlap, and only some pens are cups. Nothing rules out cups being shirts or curtains, or curtains being pens (some shirts, which are curtains, are pens). So no conclusion follows.

Q12DSSSB TGT Computer Science, 25 Jun 2023, Shift 2 (12:30 PM)
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: Physical exercises are good for health. Conclusions: I. Mostly players are healthy because of the involvement of physical exercise in their profession. II. Ravinder played tennis at the age of 70.
  1. AOnly conclusion II follows.
  2. BOnly conclusion I follows.
  3. CBoth conclusions I and II follow.
  4. DEither conclusion I or II follows.
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Correct answer: (B) Only conclusion I follows.

Explanation

If exercise is good for health, players who exercise as part of their profession will mostly be healthy, so I follows. Ravinder playing tennis at 70 is a specific fact that cannot be inferred from the statement.

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.

More DSSSB TGT / PGT subjects

Computer Science 2485English 200General Awareness 200Hindi 120Mathematics 120Pedagogy 100