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

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