Kate goes for mathematics classes and had a test on that particular day. She was stuck on the very first question. Find the HCF of 15 and 30. Help her by choosing the correct answer from the below choices.

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Solution

The correct option is B 15
The HCF of 15 and 30 is 15. We have to find the HCF of both numbers. For finding the HCF we can use two methods - either division method or prime factorization.

This is the division method for finding the HCF. The last divisor which gives the remainder as 0 is the required HCF.

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