৬০ সেকেন্ড
১ সেকেন্ড
৬ সেকেন্ড
০.৬ সেকেন্ড
Source: পরিবার পরিকল্পনা অধিদপ্তর - সহকারী পরিকল্পনা কর্মকর্তা (25-05-2012)
Answer: ৬ সেকেন্ড
Explanation:
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১৫০ মিটার দীর্ঘ একটি ট্রেন ৪৫০ মিটার দীর্ঘ প্ল্যাটফর্ম ২০ সেকেন্ডে অতিক্রম করে। ট্রেনটির গতিবেগ ঘন্টায় কত কিলোমিটার?
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মহাদেশ ও দেশ পরিচিতি
Speech or Narration Change
ক্রিয়া ও ক্রিয়ার কাল
জাতিসংঘ ও অন্যান্য আন্তর্জাতিক সংস্থা
খেলাধুলা ও বিনোদন
Subject-Verb Agreement
মুক্তিযুদ্ধ ও ভাষা আন্দোলন
সাধু ও চলিত রীতি
শব্দের প্রকারভেদ ও উৎস
ঐকিক নিয়ম (Unitary Method)
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