Q132Multiple choice
In a test, +3 marks are given for every correct answer and –1 mark are given for every incorrect answer. Sona attempted all the questions and scored +20 marks though she got 10 correct answers.
- (i)How many incorrect answers has she attempted?
- (ii)How many questions were given in the test?
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(i) How many incorrect answers has she attempted?
(ii) How many questions were given in the test?