Probability Puzzles
Hard
3 min
A card is drawn from a standard 52-card deck. What is the probability that it is either a heart or a king?
Hint
The king of hearts belongs to both groups and must not be counted twice.
Answer
4/13.
Explanation
There are 13 hearts and 4 kings, with one overlap: the king of hearts. Favorable cards = 13 + 4 - 1 = 16. Probability = 16/52 = 4/13.
Step-by-Step Solution
Favorable = 13 + 4 - 1 = 16.
Probability = 16/52 = 4/13.
Probability = 16/52 = 4/13.