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In a class test (+3) marks are given for...

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. Radhika school 20 marks. if she has got 12 correct answers, how many questions has she attempted incorrectly? Mohini scores (-5) marks in this text, though she has got 7 correct answers. How many question Has she attempted incorrectly?

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