NAGALAND Class 10 - Fundamental Theorem of Arithmetic Videos

Every composite number can be represented as a product of primes, and this factorisation is unique. 

21 = 3 × 749 = 7 × 7 LCM = 3 × 7 × 7 = 147The required least common multiple (LCM) of 21 and 49 = 147.

50 = 5 × 2 ×5 40 = 2 × 2 × 2 × 5 LCM = 2³ × 52 = 200 The required least common multiple (LCM) of 50 and 40 = 200.