Discussion
In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?
Answer: C
There are \( 10 + 25 = 35 \) tickets in the lottery.
\[ P = \frac{10}{35} = \frac{2}{7} \]
The denominator is the total number of tickets, not the number of blanks - using 25 would give \( \tfrac{2}{5} \).
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