Quantitative Question:
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In objective test a correct ans score 4 marks and on a wrong ans 2 marks are subtracted, a student score 480 marks from 150 question. how many ans were correct?



Let,x be the correct answer and y
be the incorrect answer.
and 4x-2y=480........(2)
By solving (1)& (2),
So, the 130 questions were correct answer(Ans).

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