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Finding HCF Using Common Factors

Find the HCF ...

Question

Find the HCF of the composite numbers 28 and 32.

A

4

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B

3

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C

2

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D

7

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Solution

The correct option is A 4
Factors of 28: 1, 2, 4, 7, 14 and 28
Factors of 32: 1, 2, 4, 8, 16 and 32

The common factors are: 1, 2 and 4 while the HCF is 4.

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