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Earn +20 ptsQ: Can two numbers have 15 as their HCF and 220 as their LCM?
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The Product of two numbers is 1320 and their HCF is 6 Find the LCM of these two numbers?
220
Does the HCF of any two no is always a factor of their LCM?
If two numbers are expressed as ab and cb this is easier to work out. Assume that a and c have no common prime factors. Thus, the HCF of the two numbers will be b. The LCM is the two numbers multiplied by each other, divided by the HCF. So the LCM will be abc. b is a factor of abc, and so the HCF will always be a factor of their LCM.
Two numbers have an LCM of 30 and an HCF of 3 What are they?
3 and 30
Two numbers have the LCM of 20 and a HCF of 2 What are they?
2 and 20
What are the two numbers with a LCM of 30 and a HCF of 3?
3 and 30
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