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A student guesses of each of 30 true/false questions. The chance that he gets at least 15 correct, is

+2 votes

asked Mar 25, 2019 in Class 12 by kratos

A student guesses of each of 30 true/false questions. The chance that he gets at least 15 correct, is

(A) 1/2

(B) 30C15/230

(C) 1/2 + 30C15/231

(D) 1/2 + 30C15/230

probability distribution
class-12
probability

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1 Answer

+3 votes

answered Apr 30, 2020 by kratos

Best answer

Correct Answer is: (C) 1/2 + 30C15/231

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