At the entrance to a casino, there are three slot machines.
Machine A is programmed so that in the long run it will produce a winner in 10% of the plays.
Machine B is programmed so that in the long run it will produce a winner in 15% of the plays.
Machine C is programmed so that in the long run it will produce a winner in 20% of the plays.
If we play each machine once, what is the probability that we will win on at least two plays?
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