Answer:
0.9393 = 93.93% probability that Daniel does not win the prize
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question, we have that:
There are 280 tickets.
Daniel does not have 280 - 17 = 263 of them. So
263/280 = 0.9393
0.9393 = 93.93% probability that Daniel does not win the prize