A test has 50 questions. A student scores 1 mark for each correct answer and -1/3 for every wrong answer, and -1/6 for not attempting a question. If the net score of the student is 32, the number of questions wrongly answered by the student cannot be less than
a. 6
b. 12
c. 3
d. 9

• can anyone explain this....?
  
• 12 years agoHelpfull: Yes(3) No(1)
• for finding min no of wrongly ansered
  we need to assume max unattempted..
  start wt 32 attempted n 18 (not possible as score !=32)..
  now 33 16 1(wrong)...(decrese non attempted by factor of 2 else v ll get decimal)
  continue to get 35 12 3..
• 12 years agoHelpfull: Yes(1) No(1)
• option c
  
  
  
  
  
  
  
  
  
  
  
• 12 years agoHelpfull: Yes(0) No(0)