in a class test plus 3 marks are given for every correct answer and -2 marks are given for every incorrect answer and no marks for not attending any questions so Mohan scores - 5 marks in a test the he was written seven correct answer how many questions has he attempted incorrectly
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Answer:
he attempted x-21 =-5 so 21+5=26 so 26/2 = 13
Step-by-step explanation:
So he had attempted 13 question incorrectly
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