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LCM and HCF

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  1. The product of two numbers is 216. If the HCF is 6, then their LCM is
    1. 72
    2. 60
    3. 48
    4. 36
Correct Option: D

Let the numbers be 6p and 6q where p and q are prime to each other.
∴ 6p × 6q = 216

⇒ pq =
216
 = 6
6 × 6

∴ LCM = 6pq = 6 × 6 = 36


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