a student answers 20 true false types of questions by tossing a fair coin. if the coin fall heads he answers true and if falls tails he answers false. find the probability that he answers atleast 12 questions correctly.
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probability of getting 12 correct answering is 3/5
ayushi57:
no answer is 0.252
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Probability = no.favourable events/total no. Of events=12/20= 3/5.
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