Mathematics · LCM and HCF
The traffic lights at three different signal points change after every 45 seconds, 75 seconds, and 90 seconds respectively. If all change simultaneously at 7 : 20 : 15 hours, then at what time will they next change again simultaneously?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 17 : 27 : 50 hours
- 27 : 27 : 30 hours
- 37 : 27 : 45 hours✓
- 47 : 28 : 00 hours
Correct answer
7 : 27 : 45 hours
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Mathematics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice LCM and HCF MCQs →Want more practice questions on LCM and HCF?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · LCM and HCF