SOLUTION: What are the odds in favor of greeting at least one head in three successive flips of a coin?

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Question 413167: What are the odds in favor of greeting at least one head in three successive flips of a coin?
Answer by richard1234(7193) About Me  (Show Source):
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This probability is equal to 1 minus the probability of getting three successive tails. The probability of obtaining three tails is (1/2)^3, or 1/8, so the probability of getting at least one head is 1 - (1/8), or 7/8.