a test contains 10 true false questions are correct answer is awarded 2 Marks and a wrong Answer is awarded -1 and a question not answered is awarded 0 a student attempt 7 questions and get 8 marks how many questions did the students answer correctly
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Answer:
Correct answers are 5.
Step-by-step explanation:
Right answer gets 2 marks.
Wrong answer losses 1 mark.
Attemted questions = 7
5 correct ans : 5Q x 2M = 10M
2 incorrect ans : 2Q x -1M = -2M
Now student final score is 8M.
So Correct answers are 5.
nargis65:
how 5 tell me again please
Trial and error method.If 1 correct 6 wrongs 2 correct 5 wrongs etc ( ∵ Total 7 attemted)
what do u mean actually I follow u also so please help me also
how u know 2 correct 5 wrong
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