in a class test containing 10 questions, 3 marks are given for every correct answer and (-2) marks are given for every incorrect answer Sandeep attempts all questions but only 6 answers are correct what is his score?
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6 correct means 6×3=18
4 wrong means (-2×4) = -8
so score 18-8 =10
4 wrong means (-2×4) = -8
so score 18-8 =10
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