Mathematics, 06.05.2020 00:43 assassin42

In an exam, a student attempted 23 questions and secured 45 marks. If for every correct answer 3 marks were awarded and for every wrong answer 1 mark was deducted then how many of his answers were wrong

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In an exam, a student attempted 23 questions and secured 45 marks. If for every correct answer 3 mar...

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