Once you attempt the question then PrepInsta explanation will be displayed.
It can be seen that if Group C has 2 questions , there is atleast 60% marks criteria for Group A cannnot be fulfilled. The scenario works out as:
Group B =23 questions , 46 marks , Group C 2 questions , 6 marks , Group A 75 questions , 75 marks. Percentage of marks in Group A =75/127 <60. However if we take C haviing 1 question the condition is fulfilled.
Group B = 23 questions , 46 marks , Group C= 1 question , 3 marks , group A 76 question , 76 marks.Percentage of marks in group A=76/125>60.
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