Question

find the h c f of 42 and 84 by prime factorisation method​

Answer 1

Answer:

6 is the HCF

Step-by-step explanation:

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Answer 2

1. Find the prime factorization of 42

42 = 2 × 3 × 7

2. Find the prime factorization of 84

84 = 2 × 2 × 3 × 7

3. To find the HCF, multiply all the prime factors common to both numbers:

4. Therefore, HCF = 2 × 3 × 7

HCF = 42