Question

Gabriela bought 48 tickets in order to win the $1000 grand prize for the raffle organized by the Student Council. If there are

432 tickets sold for the raffle, what is the probability that Gabriela will not win the grand prize?

Answer 1

`(8)/(9)`

Explanation:

Since there are 432 tickets total and Gabriela bought 48, the chances of Gabriela not winning the grand prize is equal to the chance of any of the tickets she did not buy getting drawn. If she bought 48, then she did not buy 432-48=384 tickets. The chances of any of these being drawn is:

`(384)/(432)=\boxed{(8)/(9)}`