Real Numbers – Lecture 01 | CH-01 | Fundamental Theorem of Arithmetic | LCM-HCF | CBSE 2027

Key topics covered include:

• Introduction to Real Numbers:
  Explains the classification of numbers, including natural numbers,
  whole numbers, integers, rational, and irrational numbers, using a
  Venn diagram (0:02 – 12:57).
• Conceptual Practice:
  Includes practice questions to determine the form of even and odd
  integers, such as 2m and 2m + 1
  (13:00 – 22:28).
• Fundamental Theorem of Arithmetic:
  Discusses how every composite number can be uniquely expressed as a
  product of prime factors (22:31 – 40:44).
• HCF and LCM:
  Teaches how to find the Highest Common Factor (HCF) and Least Common
  Multiple (LCM) using prime factorization, including practical examples
  and the relationship formula:
  HCF(a, b) × LCM(a, b) = a × b
  (40:46 – 1:01:40).