A student gets 3 marks for answering a question correct and loses 1 mark for answering it wrong. Suppose he answers 5 questions correct and 2 questions wrong, then marks scored by him are
___

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Solution

Total marks obtained by the student = (3 $\times$ 5) + (-1 $\times$ 2)
= 15 - 2 = 13

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A student gets 3 marks for answering a question correct and loses 1 mark for answering it wrong. Suppose he answers 5 questions correct and 2 questions wrong, then marks scored by him are ___

Total marks obtained by the student = (3 × 5) + (-1 × 2) = 15 - 2 = 13

A student gets 3 marks for answering a question correct and loses 1 mark for answering it wrong. Suppose he answers 5 questions correct and 2 questions wrong, then marks scored by him are
___

Total marks obtained by the student = (3 $\times$ 5) + (-1 $\times$ 2)
= 15 - 2 = 13