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Please give step by step explanation​

Answer» <html><body><p><strong>Step-by-step explanation:</strong></p><p>(i) In a <a href="https://interviewquestions.tuteehub.com/tag/class-18125" style="font-weight:bold;" target="_blank" title="Click to know more about CLASS">CLASS</a> test,</p><p></p><p>marks given for every correct answer = 3</p><p></p><p>marks given for <a href="https://interviewquestions.tuteehub.com/tag/12-269062" style="font-weight:bold;" target="_blank" title="Click to know more about 12">12</a> correct answer = 12×3= 36</p><p></p><p>radhika obtained 20 marks in the class testt</p><p></p><p>therefore, marks obtained for incorrect answer = 20 -36</p><p>= -16</p><p>therefore, marks given for one incorrect answer = -2</p><p></p><p>so, no of incorrect answer = -16× (-1/2)</p><p>=8</p><p>Thus, radhika has attempted = 8 incorrect questions</p><p></p><p>(ii) Marks given for <a href="https://interviewquestions.tuteehub.com/tag/seven-640525" style="font-weight:bold;" target="_blank" title="Click to know more about SEVEN">SEVEN</a> correct answer = 3×7=21</p><p></p><p>Mohini scores = -5</p><p></p><p>Marks obtained for incorrrect answer = -5-21 = -26</p><p></p><p>now, marks given for one incorrect answer = -2</p><p></p><p>therefore, no of incorrect answer Mohini has attempted = -26×(-1/2)=13 </p><p>13 incorrect <a href="https://interviewquestions.tuteehub.com/tag/question-25051" style="font-weight:bold;" target="_blank" title="Click to know more about QUESTION">QUESTION</a></p></body></html>


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