# Find the LCM and HCF of 6 and 20 by the prime factorisation method

**Solution: **

We will use the prime factorisation to find the LCM and HCF if 6 and 20

⇒ 6 = 2 × 3 20 = 2 × 2 × 5

Thus, the HCF (6, 20) is 2

The LCM (6, 20) is 2 × 2 × 3 × 5 = 60

ā Check: NCERT Solutions for Class 10 Maths Chapter 1

## Find the LCM and HCF of 6 and 20 by the prime factorisation method

**Summary:**

The LCM and HCF of 6 and 20 by prime factorisation method is 60 and 2 respectively

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