A test contains 10 true/ false question. A correct answer is awarded 2 marks, a wrong answer -1 and a question not awarded is awarded 0. A student attempt 7 question and get 8 marks. How many question did the student answer correctly.
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student got = 8 marks
if each correct answer given 2 marks then student have answered 5 answers correctly . because he has attempted 7 question , it means that on answering 5 questions he got 10 points and due to 2 wrong answers he got -2 . Therefore he got 8 marks
aagman42:
nice dear
thanks
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