Mathematics · LCM and HCF
Three bells ring at regular intervals. The first bell rings every 120 minutes, the second every 180 minutes, and the third every 240 minutes. If all three bells ring together at 9:00 a.m., at what time will they ring together again?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19:00 p.m.✓
- 23:00 p.m.
- 312:00 noon
- 46:00 p.m.
Correct answer
9:00 p.m.
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