Three numbers are in the ratio 2 : 3 : 4. If their LCM is 480, then their HCF is ..............
- A. 40 ✓
- B. 2.2
- C. 20
- D. 80
Correct Answer: A. 40
Explanation
Let the numbers be 2x, 3x, and 4x. Their LCM is 12x. Given 12x = 480 \Rightarrow x = 40. The HCF of 2x, 3x, 4x is x, which is 40.
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