Question

A. Find the HCF by finding all the factors.
1. 15, 30 .​

Answer 1

15 = 3 * 5

30 = 2 * 3 * 5

HCF = 3 * 5 = 15

Explanation:

HCF is the common least power of the given number as in the prime factorisation of 15 and 30. 3 and 5 are common so HCF is 3 * 5 = 15

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