6. In a competition 3 marks are given for every correct answer and (-2) marks are given for every incorrect answer and no marks for not attempting any question. (i) Sachin scored 24 marks. If he got 14 correct answers, how many questions has he attempted incorrectly?
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Step-by-step explanation:
Now, we know that for every incorrect answer =−2 marks. So, the total marks for incorrect answers = marks for incorrect answer × number of incorrect answers. Hence, the number of incorrect answers is 13.
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