Mathematics, 19.10.2021 21:30, vonyeaparker6064

In a quiz +2 marks are given for a correct answer, -1 marks for an incorrect answer and 0 marks for not attempting a question. Radhika scored 30 marks. If she got 18 correct answers, how many questions did she attempt incorrectly?

Answers: 3

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In a quiz +2 marks are given for a correct answer, -1 marks for an incorrect answer and 0 marks for...