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In a class test +3 marks are given for every correct answer and -2 marks are given for every incorrect answer and no marks for not attempting any questions

1) Radhika scored 20 marks if she got 12 correct answers how many questions has she attempted incorrectly? 2) Mohan scored -5 marks in this test though he got 7 corrrect answer. How many questions he attempted incorrectly?


Answer of 1st question is 8 and that of second one is 13
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