Question

Q4. Find the HCF and LCM of 30, 60 and 75 by Prime factorisation method-
(Ans HCF= 15, LCM= 300)​

Answer 1

Step-by-step explanation:

By prime factorisation method

30 = 2× 3 × 5

60 = 2× 2× 3 × 5

75 = 3 × 5 ×5

so,

HCF = 3×5 = 15

And

LCM = 5 × 5 × 3 × 2 ×2 = 300