In a class test (+ 3) marks are given for every correct answer and (–2) marks are given for every incorrect answer and no marks for not attempting any question.Mohini scores –5 marks on this test, though she has got 7 correct answers. How many questions has she attempted incorrectly?
In a class test (+ 3) marks are given for every correct answer and (–2) marks are given for every incorrect answer and no marks for not attempting any question.
Mohini scores –5 marks on this test, though she has got 7 correct answers. How many questions has she attempted incorrectly?
Pawan Prajapati , 4 Years ago
Grade 12
