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Mathematics 20 Online
OpenStudy (anonymous):

Without giving away the answer, let's look at maybe a similar problem...an easier to conceive one: If we toss a coin two times: HH HT TH TT The probability of two heads is 1/4; of two tails is 1/4 of a head and tail is 1/2 3 tosses: HHH HHT HTH HTT THH THT TTH TTT What is the probability of 2 heads? 3/8 What is the probability of 2 tails? 3/8

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