Express your answers as a ratio in simplest form,
using a colon to separate the numbers. Example 3:4.

If you have a 1 in 1000 chance of winning a 3-digit lottery game, the probability of winning a 6-digit game just like it must be very high. What is the probability of winning this lottery game if only one ticket is purchased?
  

  Some games have predetermined winners printed on tickets.The new state lottery game promises a winner in 4 out of every 20 tickets. If the probability is true, what would be the least number of tickets a person should buy to guarantee getting a winning ticket?

Rhonda bought 40 tickets, 10 of which were winners. If Rhonda's win:lose ratio holds true for all tickets, what is the probability of a randomly drawn ticket being a winning ticket?

probability

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