In an examination, a student gets 4 marks for every correct answer and logos 1 mark for every wrong answer. if he attempts in all 60 questions and secures 130 marks, then find the number of questions he attempted correctly.
Let the number of questions answered correctly = x
A/c to question ,
4x + (60 - x)(-1) = 130
=> x= 38
So, the answer would be option c)38
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