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Solved Examples: Syllogism | General Intelligence and Reasoning for SSC CGL PDF Download

Direction: In each of the question below are three statements following by three conclusions numbered I, II and III. You have to take the three given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusion logically follows from the two statements disregarding commonly known fact.

Q1:
Statement:
All flowers are trees. All trees are jungles. No jungle is hill.

Conclusions:
I. No flower is hill.
II. No tree is hill
III. Some jungles are flowers.

(a) None follows
(b) Only I and II follows
(c) Only I and III follows
(d) Only II and III follows
Ans:
(d)
All flowers are trees + All trees are jungles = A + A = A = All flowers are jungles → conversion → Some jungles are flowers Hence III follows. All trees are jungle + No jungle is hill = A + E = E = No tree is hill. Hence III follows. All flowers are trees + No tree is hill. Hence II follows. All flowers are trees + No tree is hill = A + E = E = No flower is hill. Hence I follows.

Q2:
Statement:
Some desks are chairs. Some chairs. Some chairs are pens. Some pens. Some pens are drawers.

Conclusions:
I. Some drawers are desks.
II. Some drawers is chairs.
III. No drawer is chair.

(a) Only II follows
(b) Only III follows
(c) Only either II or III follow
(d) Only I and either II or III follow.

Ans: (c)
I-type statements can't be combined no conclusion follow by combined But II and III make a complementary I-E pair, Hence either I or III follows.

Q3:
Statement:
All flowers are trees. Some trees are houses All houses are wheels.

Conclusions:
I. Some wheels are trees.
II. Some trees are flowers.
III. Some wheels are flowers.

(a)Only I and II follow
(b) Only I and III follow
(c) Only II and III follow
(d) All I, II and III follow
Ans: 
(a)
Some trees are houses + All houses are wheels = I + A = I = Some trees are wheels → (I) conversion → Some wheels are trees (I). Hence I follows. All flowers are tree → (A) conversion → Some trees are flowers (I). Hence II follows. But II and III can't, be combined as they are I -type statements Hence III does not follow.

Q4:

Statements:
Some dogs are bats.
Some bats are cats.

Conclusions:
I. Some dogs are cats.
II. Some cats are dogs.

(a) Neither I nor II follows
(b) Only I follows
(c) Only II follows
(d) Both I and II follows
Ans:
(a)
Solved Examples: Syllogism | General Intelligence and Reasoning for SSC CGL

Q5:
Statements:

I. All buildings are chalks.
II. No chalk is toffee.

Conclusions:
I. No building is toffee
II. All chalks are buildings.

(a) If either conclusion I or conclusion II is true.
(b) If only conclusion II is true.
(c) If only conclusion I is true.
(d) If neither conclusion I nor conclusion II is true.
Ans:
(d)
Solved Examples: Syllogism | General Intelligence and Reasoning for SSC CGL

Q6:
Statements: 

I. All the harmoniums are instruments.
II. All the instruments are flutes.

Conclusions:
I. All the flutes are instruments.
II. All the harmoniums are flutes.

(a) If only conclusion I is true.
(b) If only conclusion II is true.
(c) If either conclusion I or conclusion II is true.
(d) If neither conclusion I nor conclusion II is true.
Ans:
(b)
Solved Examples: Syllogism | General Intelligence and Reasoning for SSC CGL
Q7: 

Statements:
I. All liquids are solids.
II. Some solids are gases.
III. All gases are clouds

Conclusion:
I. Some clouds are solids
II. Some clouds are liquids
III. Some gases are liquids
IV. Some solids are clouds

(a) if only conclusion III is true.
(b) Only I and IV follows
(c) if either conclusion I or conclusion II is true.
(d) if neither conclusion I nor conclusion II is true
Ans: 
(b)
Solved Examples: Syllogism | General Intelligence and Reasoning for SSC CGL

Q8:
Statements: 

I. Some Cats are Rats.
II. All bats are tables.
III. All Rats are Bats.

Conclusion:
I. Some Cats are bats
II. All bats are rats
III. All tables are cats
IV. All bats are cats

(a) Only III & IV follow
(b) Only II follows
(c) Only  I  follows
(d) None follows
Ans:
(c)
Solved Examples: Syllogism | General Intelligence and Reasoning for SSC CGLQ9:
Statements

I. Some bags are books
II. All books are boxes

Conclusions
I. All Bags are boxes
II. No Book is boxes

(a) Only I follows
(b) Only II follows
(c) Only either I or II follows
(d) None follows

Ans: (d)
Solved Examples: Syllogism | General Intelligence and Reasoning for SSC CGL

Q10:
Statements:

I. Some messages are whatsapp.
II. All Hikes are whatsapp.
III. All whatsapp are facebook.

Conclusion:
I. Some facebook are messages
II. All hikes are facebook
III. Some messages are hikes
IV. Some message are facebook

(a) Only I and II follow
(b) Only either III or IV follows
(c) Only I and either III or IV follow
(d) Only I, II and IV follows
Ans:
(d)
Solved Examples: Syllogism | General Intelligence and Reasoning for SSC CGL

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FAQs on Solved Examples: Syllogism - General Intelligence and Reasoning for SSC CGL

1. What are the rules for solving syllogism questions?
Ans. The rules for solving syllogism questions include understanding the basic structure of a syllogism, applying the rules of categorical syllogisms (such as the four categorical propositions - A, E, I, and O), using Venn diagrams to visualize the relationships between the terms, and applying the principles of conversion, obversion, and contraposition.
2. How can I solve syllogism questions effectively?
Ans. To solve syllogism questions effectively, it is important to practice and familiarize yourself with the rules and concepts of syllogisms. Break down the given statements into categorical propositions, determine the relationships between the terms, and use Venn diagrams to visualize the information. Apply the rules and principles of syllogisms to draw valid conclusions.
3. Can you provide an example of solving a syllogism question?
Ans. Certainly! Consider the following syllogism: Statement 1: All dogs are animals. Statement 2: Some animals are mammals. Conclusion: Therefore, some dogs are mammals. Using Venn diagrams, we can represent the statements as overlapping circles. The first circle represents dogs and the second circle represents animals. Since the first statement says "All dogs are animals," we can place the dog circle entirely within the animal circle. The second statement says "Some animals are mammals," so we can shade the part of the animal circle that represents mammals. By observing the diagram, we can see that there is an overlap between the dog circle and the shaded region, indicating that some dogs are mammals. Thus, the conclusion is valid.
4. Are there any shortcuts or tips for solving syllogism questions quickly?
Ans. While there are no shortcuts to completely bypass the process of solving syllogism questions, there are a few tips that can help you solve them more efficiently. Practice drawing Venn diagrams quickly and accurately. Familiarize yourself with the rules and principles of syllogisms to quickly identify valid conclusions. Also, try to break down the given statements into simpler forms to make the analysis easier.
5. How can I improve my syllogism-solving skills?
Ans. Improving your syllogism-solving skills can be accomplished through consistent practice. Solve a variety of syllogism questions, ranging from easy to difficult, to enhance your understanding of different scenarios. Familiarize yourself with the rules and concepts of syllogisms and learn from solved examples. Regularly review and analyze your mistakes to identify areas for improvement, and seek clarification or guidance whenever necessary.
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