Question

Determine the HCF by Prime factorisation method 45 and 30 ​

Answer 1

Step-by-step explanation:

15 is the HCF

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Answer 2

Answer:

Prime factorization of 45 and 30 is (3 × 3 × 5) and (2 × 3 × 5) respectively. As visible, 45 and 30 have common prime factors. Hence, the HCF of 45 and 30 is 3 × 5 = 15.