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Mathematics for IGCSE & O level - Number (Section 1 - No. 14)

What is the HCF of 12 and 15?
1
3
5
60

Paskaidrojums

The factors of 12: 1, 2, 3, 4, 6, 12. The factors of 15: 1, 3, 5, 15. The highest common factor is 3.

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