৪.৫ সেকেন্ড
৬ সেকেন্ড
৭.৫ সেকেন্ড
৯ সেকেন্ড
Source: শিক্ষা প্রকৌশল অধিদপ্তর - অফিস সহায়ক-26-11-2021
Answer: ৪.৫ সেকেন্ড
Explanation:
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A train can cross another train of equal length coming form the opposite direction with the speed of 108 km/h in 3 minutes . The speed of the other train is 90 km/h. Find the length of the train .
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রেল লাইনের পাশে একটি তালগাছ রয়েছে। ঘন্টায় ৪৫ কিমি. বেগে ধাবমান ১৫০ মিঃ লম্বা একটি ট্রেন কত সময়ে ঐ তালগাছটি অতিক্রম করবে?
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English Literature
ক্রম ও ধারা (Sequence & Series)
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