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A single card is selected from a deck. find the probability that it is king or a red card.
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The number of all possible outcomes is 52 (= the number of cards in a standard card deck).
The number of all possible favorable outcomes is = 26 + 2 = 28.
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| Here the addend 52/2 = 26 represents 26 red cards; |
| the addend 2 represents 2 (two) black kings. |
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The answer to the problem's question is this ratio
P = = = .
