Question

In a class test containing 50 questions a student is awarded 2 marks for each correct answer and -2 for each incorrect question and no marks for not attending any question if raju secured 94 marks in a test what are the possibilities of his marking correct or wrong answer?




pls answer​

Answer 1

Answer:

If Raju scored 94 marks,then following are the probabilities,

case - 1 :

47 correct answers and 3 not attending,

= 47*2 = 94.

case - 2 :

48 correct answers, 1 worng answer, and 1 unattempted,

= (48*2) - (1*2) = 96-2 = 94.

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