in a quiz(+3) marks are given for a correct answer and(-2)marks for an incorrect answer. Radhika answered all the questions and scored 30 marks. If she got 18 correct answers, how many questions did she attempt incorrectly.
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ans is 12............
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Answer:12
Step-by-step explanation:Since Radhika gets +3 marks for each correct answer she gets = 3*18= 54
-2 marks for negative answer = 54-30=24
24/3=12
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