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

• take equations as x-y(1/3)-z(1/6)=32 and x+y+z=50 on simplifying we get 7x-y=242 so x=(242+y)/7 : x cannot be a fraction as it is number of question substitute options and u would get answer as 3 .so option A
  
• 9 years agoHelpfull: Yes(17) No(1)
• ans is 3
  as x-1/3y-1/6z=0
  so minimum value of y should be three to satisfy this
  
• 9 years agoHelpfull: Yes(0) No(0)