Verbal Reasoning by Dr. R S Aggarwal – Logical reasoning – Quantifier Subject Copula Predicate.

Verbal Reasoning by Dr. R S Aggarwal – Logical reasoning – Quantifier Subject Copula Predicate.



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Here’s a focused explanation and guide based on Verbal Reasoning by Dr. R.S. Aggarwal, particularly from the chapter on Logical Reasoning—specifically the structure of standard categorical statements using:


Contents [hide]

🧠 Quantifier – Subject – Copula – Predicate (Q – S – C – P)

This format helps break down logical statements into components, which is essential for solving syllogism-type questions.


🧩 1. Basic Structure of Logical Statements:

A standard statement in logical reasoning follows:

Quantifier + Subject + Copula + Predicate

Component Function Examples
Quantifier Tells how much or how many All, Some, No
Subject The main person or thing men, dogs, students
Copula A linking verb is/are/was/were
Predicate Tells something about subject doctors, intelligent, athletes

📝 Example 1:

Statement: All men are mortal.

  • Quantifier: All

  • Subject: men

  • Copula: are

  • Predicate: mortal

➡️ Structure: All + men + are + mortal


📝 Example 2:

Statement: No student is lazy.

  • Quantifier: No

  • Subject: student

  • Copula: is

  • Predicate: lazy

➡️ Structure: No + student + is + lazy


📝 Example 3:

Statement: Some cats are black.

  • Quantifier: Some

  • Subject: cats

  • Copula: are

  • Predicate: black

➡️ Structure: Some + cats + are + black


🧠 2. Standard Forms of Categorical Propositions:

Type Symbol Form Example
A Universal Affirmative All S are P All boys are smart.
E Universal Negative No S are P No girls are rude.
I Particular Affirmative Some S are P Some teachers are kind.
O Particular Negative Some S are not P Some students are not lazy.

🧠 3. Why Learn Q-S-C-P?

  • Helps in identifying valid syllogisms

  • Crucial for Venn diagram-based reasoning

  • Makes it easy to convert or infer statements


🔁 Conversions Based on Structure:

Original Statement Converse Form
All A are B Some B are A (not always valid)
No A is B No B is A (valid)
Some A are B Some B are A (valid)
Some A are not B Conversion not valid

🧪 Practice Questions:

Q1. Break down the statement: Some engineers are not creative.

  • Quantifier: Some

  • Subject: engineers

  • Copula: are not

  • Predicate: creative

➡️ Type: O – Particular Negative


Q2. What type is the following: No dogs are reptiles.

  • Quantifier: No

  • Subject: dogs

  • Copula: are

  • Predicate: reptiles

➡️ Type: E – Universal Negative


📘 R.S. Aggarwal Book Reference:

You’ll find this in:

  • Part II: Logical Deduction

  • Chapter: Logic (Statements and Conclusions / Syllogism)

  • Exercises include:

    • Direct Q-S-C-P identification

    • Syllogism MCQs

    • Venn diagram conclusions


🚀 Want to practice more?

I can give you:

  • 📝 PDF worksheet with 20 questions

  • 📊 Interactive quiz

  • 📽️ Video explanation script or animation idea

Let me know how you’d like to continue your learning!

Verbal Reasoning by Dr. R S Aggarwal – Logical reasoning – Quantifier Subject Copula Predicate.

Quanti ers in TIME and SPACE – ILLC Preprints and Publications

Proceedings of SemDial 2025 (DialWatt)



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