Mathematics · LCM and HCF
Three bells ring simultaneously at 11:00 a.m. They ring at regular intervals of 20 minutes, 30 minutes, and 40 minutes respectively. At what time will all three bells ring simultaneously again?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11:00 p.m.✓
- 22:00 p.m.
- 31:15 p.m.
- 41:40 p.m.
Correct answer
1:00 p.m.
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