"When Will Traffic Lights Change Simultaneously Again? Class 10 Maths | Chapter 1 | Bengali | SEBA

In this video, we tackle a Competency math question for Class 10 involving three traffic lights at different road crossings that change after every 48 seconds, 72 seconds, and 108 seconds, respectively. They all start changing simultaneously at 7 a.m., but when will they change simultaneously again?

তিনটি ভিন্ন রোড ক্রসিংয়ের ট্রাফিক লাইট যথাক্রমে প্রতি 48 সেকেন্ড, 72 সেকেন্ড এবং 108 সেকেন্ড পর পর পরিবর্তন হয়। যদি তারা সকাল 7 টায় একযোগে পরিবর্তন হয়, তাহলে তারা কোন সময়ে পরিবর্তন করবে?


Watch the full explanation to find out how to solve this question step-by-step using the concept of LCM (Least Common Multiple).

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Tags: Math puzzles
Traffic light puzzleRoad crossing puzzleCompetitive exam questionsLCM math problemsLeast common multipleMath solutionsTraffic signal timing problemLogical reasoning puzzlesSSC CGL math preparationUPSC math tricks
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