Worker A takes 8 hours to do a job . Worker B takes 10 hours to do the same job. How long should it take both A and B, working together but independently , to do the same job?

A 449 days
B 447 days
C 438days
D None of these

Correct Answer: None of these

যে শব্দের দ্বারা সংক্ষেপে কোন বিষয় সুনির্দিষ্টভাবে ব্যক্ত করা যায় তাকেই পরিভাষা বলা হয়। শব্দ হল যেকোন কিছুর নাম বা তাকে ভাষায় প্রকাশ করার উপায়, প্রতিশব্দ হল সমার্থক শব্দ; কিন্তু পরিভাষা পুরোপুরিই সংজ্ঞাবাচক। এর অর্থ ব্যাপক। একটি পরিভাষা একটি পরিপূর্ণ সংজ্ঞাকে নির্দেশ করে। শব্দের অর্থ এবং পরিভাষার অর্থ ভিন্ন বা একেবারে বিপরীত হতে পারে। যেমন, বাংলা ভাষায় বিজ্ঞান শব্দটি সংস্কৃত ভাষা থেকে এসেছে। সংস্কৃতে বিজ্ঞান শব্দের অর্থ ছিল ঈশ্বরানুভব, অপরোক্ষ জ্ঞান, তত্ত্বজ্ঞান বা বিশেষ জ্ঞান। কিন্তু বাংলায় এটি ইংরেজি science শব্দের পরিভাষা হিসেবে ব্যবহৃত হয়। তাই বাংলায় বিজ্ঞান শব্দের অর্থ নিয়মিত পর্যবেক্ষণ ও গবেষণার ফলে কোন বিষয়ে ক্রম অনুসারে লব্ধ জ্ঞান। ঈশ্বরানুভূতি এবং গবেষণালব্ধ জ্ঞান একেবারে বিপরীত। দেখা যাচ্ছে, পরিভাষার অর্থ সম্পূর্ণ ভিন্ন এবং এটিই বর্তমানে একটি সুনির্দিষ্ট সংজ্ঞার জন্ম দিয়েছে।
Bissoy MCQ
#গণিত #ক্রম ও ধারা (Sequence & Series) #সময় ও কাজ (Time and work) #Janata Bank Ltd #Janata Bank Ltd - Asst. Executive Officer - 09.01.2015 #Janata Bank Ltd - Asst. Executive Officer - 23.01.2015

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