🔣 Logic-First Learning • 8 PYQ Papers Analysed

Master Discrete Mathematics
for Computer Science

21MAB301T · SRM IST · Semester 5
Discrete Mathematics — Complete Smart Study Hub

5
Units Covered
8
PYQs Analysed
60+
Proof Techniques
18
Must-Know Theorems
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DRIVE RESOURCES

📚 Notes & Presentations

Unit-wise lecture notes, PPTs & study material synced from Google Drive

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🔥 Units 2 & 3 = 55% of marks.  Graph Theory and Algebraic Structures appear in every single PYQ paper. Master these first! Discrete Mathematics exams heavily test proof writing and step-by-step derivations — never skip intermediate steps.
📈 Data-Driven Analysis

PYQ Pareto Analysis

Based on 8 exam papers. Master the 20% of topics that yield 80% of marks.

Unit 1
Logic & Proofs
20%
15 / 75 marks
🔥 HOT
Unit 2
Graph Theory
28%
21 / 75 marks
🔥 HOT
Unit 3
Algebraic Structures
27%
20 / 75 marks
Unit 4
Combinatorics
13%
10 / 75 marks
Unit 5
Lattices & Boolean Algebra
12%
9 / 75 marks

🏆 Top Topics — The Pareto List

Mastering only these topics lets you score 55–65 out of 75

🌡️ Topic Frequency Heatmap

📚 Complete Study Guide

Unit-by-Unit Study Guide

Clear concepts, proof techniques, theorem statements, and common exam mistakes for every unit.

⚡ Quick Reference

Theorems, Laws & Formulas Cheat Sheet

Key Discrete Mathematics formulas, identities, and theorem statements. Click any card to highlight it.

🎯 Exam Strategy

Guaranteed Marks Plan for Discrete Mathematics

How to approach each part of the Discrete Mathematics exam for maximum marks.

Part A
25 MCQs × 1 = 25 marks
Target: 20–23 / 25
  • Tautology / Contradiction identification: Build truth table for ≤ 3 variables 8/8
  • Equivalence laws: De Morgan's, Absorption, Idempotent 8/8
  • Graph theory: degree, Euler circuit condition, planarity 8/8
  • Group/Ring/Field property identification (closure, inverse, etc.) 7/8
  • Counting: Permutations nPr, Combinations nCr — direct calculation 7/8
  • Hasse diagram reading — identify LUB, GLB, chains 6/8
  • Pigeonhole principle applications 6/8
  • Recurrence relations — find a few terms 5/8
Part B
5 Questions × 8 = 40 marks
Target: 32–40 / 40
QUnitExpected Topic
21U1Prove logical equivalence using laws OR construct truth table for wff
22U2Graph theory: prove Euler/Hamiltonian path, draw graph from properties 🔥
23U3Prove a given algebraic structure is a Group or Ring 🔥
24U3/4Coset decomposition OR solve recurrence relation 🔥
25U5Lattice / Boolean algebra — draw Hasse diagram or prove Boolean identity
Part C
1 Question × 10 = 10 marks
Target: 8–10 / 10

Choose 1 of 2 questions. Typical options:

Q.26
Group theory: prove subgroup, find cosets, apply Lagrange's theorem 🔥 OR Graph coloring: apply Welsh-Powell algorithm, find chromatic number
Q.27
Solve recurrence relation using characteristic equation method OR Boolean algebra simplification and logic circuit design
💡 Discrete Mathematics Exam Secret: ALWAYS state the theorem or law you are using by name before applying it. Examiners award marks for each justified step. A correct answer without justification can lose 50% of marks. Show every intermediate step in proofs.

🔮 Predicted Next Exam Topics

Based on recent patterns

✏️ Practice Zone

Solved Questions & MCQ Drill

The most-repeated proof and calculation questions from 8 years of PYQs, plus MCQ flashcards.

🃏 MCQ Flashcards — Active Recall Drill

Click A, B, C, or D to commit your answer. Get instant feedback. Track your score below.

✅ Correct: 0
❌ Wrong: 0
📊 Total: 0

✅ Final Revision Checklist

📜 Past Year Papers

Solved PYQs

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