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The least common factor of 30 and 42 is the smallest number that is a factor of both of them and is 1.

However, I suspect that you mean either:

  • What is the highest common factor of 30 and 42?
ie what is the highest number that is a factor of both 30 and 42:

hcf = 6;

  • What is the lowest common multiple of 30 and 42?
ie that is the smallest number that is a multiple of both 30 and 42

lcm = 210.

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13y ago

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1234456

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Gerniya Bell

Lvl 2
3y ago
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It is: 1

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Wiki User

7y ago
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Q: What is the least common factor of 30 and 42?
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