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

1 answer

  1. "getting at least one head in 3 flips"
    implies you don't want all 3 tails,
    Pr(all 3 tails) = 1/8
    Pr(at least one head) = 1 - 1/8 = 7/8

    so odds in favour of at least one head
    = 7:1

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