Exactly one head given at least one
Two fair coins are flipped. Given that at least one is heads, what is the probability that exactly one is heads? Give your answer as a decimal (to 4 decimals).
Show hints (2)+
- List the four equally likely outcomes and drop the one with no heads.
- Among the three survivors, how many have exactly one head?
Answer
Reveal answer →Final answer
0.6667 (± 0.001)
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Asked at: Timed Mental-Math & Sequences, Game-Based Aptitude