Problem-Solving and Data AnalysisMediumProbability of a heart or a king
Problem-Solving and Data Analysis practice question
One card is drawn at random from a standard deck of 52 cards. What is the probability that it is a heart or a king?
Answer: 4/13 or 16/52
13 hearts plus 4 kings, minus the king of hearts counted twice: 16 cards, so 16/52 = 4/13.
Common wrong answers
- If you answered 17/52
- 17/52 counts the king of hearts twice.
- If you answered 1/4
- 1/4 counts only the hearts.
- If you answered 1/13
- 1/13 counts only the kings.
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