1 .A multiple choice question has 5 options. Choosing the correct option earns the student 1 marks. However choosing the wrong option incurs negative marks so that if a student chooses an option randomly, his expected score is 0. Suppose a student has successfully eliminated 2 incorrect options. His expected score if he chooses randomly among the remaining options is.

• for right ans 1 no is given and for wrong -.25
  so 1(1)+4(-.25)=0
  now
  1(1)+2(-.25)=.5=1/2.
• 9 years agoHelpfull: Yes(26) No(9)
• answer will 1/6.
• 9 years agoHelpfull: Yes(6) No(2)
• answer will 0
• 9 years agoHelpfull: Yes(5) No(1)
• ex+1/3+1/6=1/2
• 9 years agoHelpfull: Yes(0) No(4)