In a standard deck of playing cards, there are 52 cards total, consisting of 4 suits: hearts, diamonds, clubs, and spades. Each suit has one ten.
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The two red tens are:
- 10 of hearts
- 10 of diamonds
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The two black tens are:
- 10 of clubs
- 10 of spades
This means there are a total of 4 tens (two red and two black) in the deck. The probability of drawing a red or black ten is given by the formula:
\[ P(\text{drawing a red or black ten}) = \frac{\text{number of favorable outcomes}}{\text{total number of outcomes}} = \frac{4}{52} \]
Now, we can simplify this fraction:
\[ \frac{4}{52} = \frac{1}{13} \]
Thus, the answer is:
1131 over 13