Скачать или смотреть Easy Direct Proof: Odd × Odd Is Always Odd

In this video, we prove the statement:

If m and n are odd integers, then mn is also an odd integer

using a direct proof.

This is a standard exam proof that appears in courses such as:

Discrete Mathematics

Introduction to Proofs

Number Theory

🔑 In this lesson, you’ll learn:

How to express an odd integer using algebra

How to structure a direct proof correctly

How to avoid common mistakes in proof questions

How to write a clear, logical argument suitable for exams

This proof technique is essential for building confidence in mathematical reasoning and proof writing.

📌 Perfect for:

First-year university students

Discrete mathematics and proof-based courses

Exam and test preparation

🔗 Watch More Proof Examples::
👉    • Direct Proof Explained — What It Is and Ho...  
👉    • Direct Proof Example: If n Is Even, Then −...  
👉    • Direct Proof of Divisibility: If 7 | a, Th...  

Full Proof Techniques Playlist:
👉    • Direct Proof Mastery: Learn Proof Techniqu...  

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