in a class test + 3 marks are given for every correct answer and minus 2 marks are given for every incorrect answer and no marks for not attempting any question Radhika scored 20 marks is she has got 12 correct answers how many questions has she attempted incorrectly
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Step-by-step explanation:
1) Radhika scored 12×3=36 marks. as 3 marks are for correct answer
final score of radhika is 20.
she got 16 marks negative. as −2 marks are for incorrect answer
therefore she made
2
16
=8 incorrect answer.
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