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Information : 10 persons work 8 hours a day and compete a job in 3 days. Calculation: How many persons can do the job in 2 days?

Information : 10 persons work 8 hours a day and compete a job in 3 days. Calculation: How many persons can do the job in 2 days? Correct Answer 12

দুধ একটি সুষম (আদর্শ) খাদ্য অর্থাৎ এতে পরিমিত পরিমাণ শর্করা, আমিষ, স্নেহ, খনিজ লবণ, ভিটামিন ও পানি রয়েছে। দুধ ‘ক্যালসিয়াম’ খনিজের প্রধান উৎস। তবে দুধে আয়রন (Fe2 + Fe3 + ) খনিজ খুব সামান্য পরিমানে থাকে। আয়রনের সবচেয়ে বড় উৎস কচুশাক।

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