A student loses I mark for every wrong answer and scores 2 marks for every correct answer . If he answers all the 60 questions in an exam and scores 39 marks , how many of them were correct?
Created: 6 months ago | Updated: 6 days ago
Job Solution Sonali Bank Ltd অফিসার (মুক্তিযোদ্ধা) ০৮.০২.২০১৯ গণিত
396
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