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In a exam for each correct answer of the question there is 3 marks. For each wrong answer there is -1 marks. If a student solved 110 correct answer and got 286 marks total, then find out how many wrong answers he has done?

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eginarrayl	extFor each correct answer we get 3 	extmarks and wrong answer we get -1.\ 	extTotal marks student got from correct answer=110	imes3=330\ 	extBut he actually got 286 	extmarks.\ 	extSo Difference in marks=286-330=-44\ 	extHence total wrong answer he solved=-frac44	extmarks for one wrong answer=-frac44left(-1
ight)=44endarray

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Deependra Verma

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