Q.132 ii answer need to confirm

Dear Student,

Ans. i) The total correct answers given by Sona = 10
However, marks obtained by her =  20
Given, 1 correct answer fetches 3 marks:
So, Marks deducted for the incorrect answer
= {20 − (10 × 3)}
= {20−30}
= −10
Also it is given that: −1 mark is awarded for every incorrect answer.
Therefore, the number of total incorrect answers = (−1)/(-10) = 10
 
(ii) Total questions answered correctly = 10
Now, we also know that:
Total incorrect answers = 10
Hence, total number of questions asked in the test = (10+10) = 20

Regards
 

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