Subject
NSI নিয়োগ
Topic
জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা (NSI) (সহকারী পরিচালক) - ০৮.১০.২০২১
A train 220 m long is moving at 45km/h. The time taken by the train to cross a tunnel 260m long is-
A train 220 m long is moving at 45km/h. The time taken by the train to cross a tunnel 260m long is-
ক)
25 secখ)
35 secগ)
38 secঘ)
40 secExplanation
নির্ণেয় সময় = (220+260) / 45×(5/18) = (480×18) / (45×5) = 38.4 সেকেন্ড [Note: সঠিক উত্তর: 38.4 সেকেন্ড। কিন্তু অপশনে কাছাকাছি মান আছে 38। এজন্য উত্তর হবে 38 সেকেন্ড]Related questions
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