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একটি রাস্তায় লাল রঙের বাতি ৩০ মিনিট, হলুদ রঙের বাতি ৩৬ মিনিট এবং সবুজ রঙের বাতি ৪৫ মিনিট পর পর তুলে। প্রথমে একসাথে জ্বলার পর বাতিগুলো কত ঘন্টা পর পুনরায় একত্রে জ্বলবে?

৩ ঘণ্টা

৫ ঘণ্টা

৭ ঘণ্টা

৯ ঘণ্টা

ANSWER : 1

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<p>এটা অনেক ভাবে করা যায়। এ রকম হলে সহজ হলো গসাগু করা।</p><p>৩০, ৩৬ ও ৪৫ এর গসাগু = ৩</p><figure class="image"><img 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"></figure>

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