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Syllogism — Verbal Reasoning Questions & Practice

Practise 1,317 Syllogism questions from Verbal Reasoning for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Syllogism — with answers

Try each question first, then open the answer. Explanations are included.

1. Statements: 1. All cats are dogs. 2. All dogs are mammals. Conclusions: I. All cats are mammals. II. Some mammals are cats.

ABoth Conclusion I and II follow
BOnly Conclusion I follows
COnly Conclusion II follows
DNeither Conclusion I nor II follows

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Answer: A

Explanation: Since all cats are inside dogs, and all dogs are inside mammals, all cats are inside mammals (I follows). Also, since cats occupy part of mammals, some mammals are cats (II follows).

2. Statements: 1. Some pens are pencils. 2. All pencils are erasers. Conclusions: I. Some erasers are pens. II. Some pencils are pens.

ABoth Conclusion I and II follow
BOnly Conclusion I follows
COnly Conclusion II follows
DNeither follows

Show answer

Answer: A

Explanation: Some pens overlap with pencils, and all pencils are inside erasers. Thus, erasers overlap with pens (I follows). Also, some pens are pencils implies some pencils are pens (II follows).

3. Statements: 1. No apple is a mango. 2. No mango is a banana. Conclusions: I. No apple is a banana. II. Some apples are bananas.

AEither Conclusion I or II follows
BOnly Conclusion I follows
COnly Conclusion II follows
DNeither I nor II follows

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Answer: A

Explanation: There is no direct relation given between apple and banana. They can either overlap or be separate. Thus, Either I ('No apple is a banana') or II ('Some apples are bananas') must be true as a complementary pair.

4. Statements: 1. All books are papers. 2. Some papers are files. Conclusions: I. Some books are files. II. No book is a file.

AEither Conclusion I or II follows
BOnly Conclusion I follows
COnly Conclusion II follows
DNeither follows

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Answer: A

Explanation: Book and File have no direct relationship defined. They form a complementary pair ('Some' and 'No'), so Either I or II follows.

5. In the following question, two statements are given, followed by two conclusions I and II. Assuming the statements to be true, decide which conclusion(s) logically follow(s): Statements: 1. Some Vegetables are not Food Items. 2. No Onions is Vegetables. Conclusions: I. Some Onions are not Food Items. II. No Onions is Food Items.

AOnly conclusion I follows
BOnly conclusion II follows
CBoth conclusions I and II follow
DNeither conclusion I nor II follows

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Answer: D

From the two premises, the conclusion that directly follows is no definite conclusion. Comparing this with conclusions I and II gives: Neither conclusion I nor II follows.

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