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Knowing the highest common factor of two numbers lets you find their lowest common multiple by:

ASubtracting it from the sum
BMultiplying it by the sum
CDividing the product by it
DAdding the product to it
Answer & Solution
Correct answer: C. Dividing the product by it
1. The product rule links the two. 2. Rearranging it isolates the multiple. 3. You divide the product by it. _Source: syllabus Mathematics, Chapter 1, Real Numbers._
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