Answer:
0.001 or 1%
Step-by-step explanation:
As stated in the question, there are 1000 possible three-digit numbers outcomes in this lottery game. When betting $1 on this game, you get to choose only one three-digit number, the probability that your number is the randomly selected number, which would give you $500, is:
[tex]P=\frac{1}{1000}=0.001 = 0.1\%[/tex]
The probability that you win $500 is 0.001 or 1%