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Both Alice and Bob toss a fair coin three times. The probability that Alice records a...

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Basic Math

Both Alice and Bob toss a fair coin three times. The probabilitythat Alice records a different numbers of heads than Bob is givenby A/B, where A and B are relatively prime integers (greatestcommon divisor is 1). Find A + B.

Answer & Explanation Solved by verified expert
3.9 Ratings (361 Votes)
Sample space of tossing a fair coin 3 times isHHH HHT HTH HTT THH THT TTH TTTExplanation Getting 3 heads 2 heads first time and tails3rd time and so onThere can be 3 heads 2 heads 1 head or 0 heads out    See Answer
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