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Suppose that we have 3 cards. Both sides of the first card are colored red, both...

Suppose that we have 3 cards. Both sides of the first card are colored red, both sides of the second card arecolored black, and one side of the third card is colored red and the other side black. The 3 cards are mixed up,and 1 card is randomly selected and put down on the ground. If the upper side of the chosen card is colored red,what is the probability that the other side is colored black?

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