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15.In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer i)Rohan answered all questions and scored 24 marks though he got 8 correct answers. ii)Smitha answered all questions and scored (-15) marks though he got 3 correct answers. How many incorrect answer had they attempted?
16.In a class test containing 15 questions 4 marks are given for every correct answer and (-1) marks are given for every incorrect answer. i) Gokul attempts all questions but only 6 of his answers are correct. What is his total score? ii) Neena gets 12 of her answers correct. What will be her score?
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sorry I don't know ??????
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