In a class test containing 20 questions, 5 marks are awarded for every correct answer, -3 are given for every wrong answer and no marks are given for questions that are not attempted Suresh scores-3 marks. If he answered 3 questions correctly, how many did he get wrong? How many did he not attempt?
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total mark = 20 ×5 =100
it is clear that he has answered 3 questions correctly
the 3-20=17
therefore he has either not attend 17 question or answered wrong
if he had got 3 correct he had got 15 marks
15 - 18 =-3 so he had
it is clear that he has answered 3 questions correctly
the 3-20=17
therefore he has either not attend 17 question or answered wrong
if he had got 3 correct he had got 15 marks
15 - 18 =-3 so he had
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