Question

Find HCF of 28, 35, 49 using the method of division by common factors.
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Answer 1

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Answer 2

Given data: 28, 35, 49

To find: HCF

Solution:

• HCF is known as the highest common factor.
• In this we need to find the common multiple factor.
• Considering the value of 28 = 2 x 2 x 7 is multiple of 28.
• The multiple of 35 is 5 x 7 and the last number is 49 = 7 x 7 is the multiple of 49.
• Hence the HCF of given number is 7.