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The GCF is 3.
Wiki User
∙ 8y agoThis answer is:
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Wiki User
∙ 10y agoGet the prime factors of each number, group them all, and multiple all common, grouped prime factors together to get the highest common factor.
9 = 3 * 3
12 = 2 * 2 * 3
15 = 3 * 5
In this case, they all share one group of 3. So, the HCF is 3.
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Santosh Kumar Soni
Lvl 1
∙ 3y agoHCF 9.12.15
Anonymous
Lvl 1
∙ 3y agoHCF:9=3×3
12=2×2×3
15=3×5
HCF=[9,12,15]=3
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Anonymous
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∙ 4y ago3
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Anonymous
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∙ 3y ago3
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Anonymous
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∙ 3y ago5
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Anonymous
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∙ 3y ago3
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