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In a test of n questions, each question has to be answered as either
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25 Aug 2023, 02:48
25 Aug 2023, 02:48
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In a test of “n” questions, each question has to be answered as either true or false. What is the maximum value of “n” so that probability of answering all the questions as true is more than 1/100?
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Re: In a test of n questions, each question has to be answered as either
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25 Aug 2023, 23:11
25 Aug 2023, 23:11
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This question asking for the probability based on the condition that all answers are selected randomly.
the probability of randomly selecting True as the answer to a question is 1/2.
Probability of answering 6 questions as True out of 6 is (1/2)^6 = 1/64
Probablity of Answering 7 questions as true out of 7 is
(1/2)^7 = 1/128
Since 1/128 <1/100 <1/64 is greater, the answer is 6
the probability of randomly selecting True as the answer to a question is 1/2.
Probability of answering 6 questions as True out of 6 is (1/2)^6 = 1/64
Probablity of Answering 7 questions as true out of 7 is
(1/2)^7 = 1/128
Since 1/128 <1/100 <1/64 is greater, the answer is 6
gmatclubot
Re: In a test of n questions, each question has to be answered as either [#permalink]
25 Aug 2023, 23:11
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