A heart or a king given red
A single card is drawn from a standard deck. Given that it is a red card, what is the probability it is either a heart or a king? Give a decimal to four places.
Show hints (2)+
- Condition down to the 26 red cards first.
- Union: hearts + red kings − the double-counted king of hearts.
Answer
Reveal answer →Final answer
0.5385 (± 0.001)
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Asked at: Options Market-Making, ETF Market-Making