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 $10$ 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 $10$ ticket.
Total number of tickets sold $=10,000$
Number of prizes awarded $= 10$
If we buy $10$ tickets, then
$P ($ not getting a prize $)=\frac{{^{9990}{C_{10}}}}{{^{10000}{C_{10}}}}$
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- [AIEEE 2012]