SOLUTION: I do not understand how to calculate this particular probability? The question is: At a local county fair, the officials would like to give a prize to 100 people selected at

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Question 881409: I do not understand how to calculate this particular probability?
The question is:
At a local county fair, the officials would like to give a prize to 100 people selected at random from those attending the fair. As of the closing day, 12,500 people have attended the fair and completed the entry form for the prize.
What is the probability that an individual who attended the fair and completed the entry form will win a prize?

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
100/12500=1/125