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The probability that an event A happens in one trial of an experiment, is 0.4 There independent trials of the experiments are performed. The probabili

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The probability that an event A happens in one trial of an experiment, is 0.4 There independent trials of the experiments are performed. The probability that the event A happens atleast once, is A. 0.936 B. 0.784 C. 0.904 D. None of these Select the correct answer from above options

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Correct Answer - B Given that , `P(A)=0.4 , P(bar(A))=0.6 ` P(the event A happens at least once ) =1-p(none of the event happens ) 1-(0.6)(0.6)(0.6) =1-0.2165 =0.784

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