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To find the HCF of 20 and 30, break them down into their prime factors:
20 = 2x2x5
30 = 2x3x5
The next step is to identify any common prime factors. In this case both numbers have a 2 and a 5 as prime factors. Multiply these together and you get:
2x5 = 10
Therefore the HCF of 20 and 30 is 10.
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Hcf of 20 and 30?
HCF is the highest common factor of two or more numbers. HCF of 20 and 30 is 10.
What is the HCF of 30 and 105?
The HCF of 30 and 105 is 15.
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The GCF is 6.
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