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HCF is the product of the smallest power of each common prime; LCM is the product of the:

ASmallest power of each prime
BSum of all the prime factors
CCommon prime factors only
DGreatest power of each prime
Answer & Solution
Correct answer: D. Greatest power of each prime
1. Every prime involved counts. 2. Use its greatest power. 3. That gives the LCM. _Source: syllabus Mathematics, Chapter 1, Real Numbers._
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