In a quiz ( +3 ) marks are given for a correct answer and ( -2 ) marks are given for an incorrect answer. What is Seema’s score if she answered 7 correct and 3 incorrect?
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correct answers = 7
Mark's = 7×3 = 21
wrong answers = 3
Mark's = 3×2 = 6
Total Mark's = 21-6 = 15
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