Question

10. 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
How many incorrect answers has she attempted?
1. How many questions were given in the test?

Answer 1

Answer:

1. she has attempted 10 incorrect answer . 2. 20 questions were given in the test . I hope you find answer

Step-by-step explanation: