in a competitive exam consisting of १०० questions each correct answer gets २ marks and each wrong answer gets (-१) mark if a student has written ७० correct answers and ३० wrong answers what is the total score of the student
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as according your queation correct answer consists 2 marks and wrong answer consists I marks then, 70 correct answer and,
30 wrong answer so,
70×2= 140
30×1=30
total 140+30= 170
out of 200
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