In a certain lottery $10,000$ tickets are sold and ten equal prizes are awarded. What is the probability of not getting a prize if you buy one ticket.
In a certain lottery $10,000$ tickets are sold and ten equal prizes are awarded. What is the probability of not getting a prize if you buy one ticket.
Total number of tickets sold $=10,000$
Number of prizes awarded $= 10$
If we buy one ticket, then $P($ getting a prize $)=\frac{10}{10000}=\frac{1}{1000}$
$\therefore$ $ P($ not getting a prize $)=1-\frac{1}{1000}=\frac{999}{1000}$
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