An examination paper has 150 multiple-choice questions of one mark each...

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An examination paper has 150 multiple-choice questions of one mark each, with each question having four choices. Each incorrect answer fetches -0.25 mark. Suppose 1000 students choose all their answers randomly with uniform probability, The sum total of the expected marks obtained by all these students is

A. 0

B. 2550

C. 7525

D. 9375

Answer: Option D

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