Math, asked by memohua240910, 9 months ago

In a test 3 marks are given for every correct answer and -1marks are given for every incorrect. Sona attempted all the questions and scored 20 marks though she has attempted 10 correct answers .
A. How many questions are there in test
B. How many incorrect answers has she attempted

Answers

Answered by lifekiller05

4

Answer:

Don't know brother. not understanding

Answered by lifemaaz14

2

search on Google or chrome

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