Question: There are three coins -- one is a two-headed coin, one is biased and comes up heads 75% of the time, and the third is

There are three coins -- one is a two-headed coin, one is biased and comes up heads 75% of the time, and the third is a "fair'' coin.

A coin is selected at random and flipped. What is the probability that the flipped coin comes up heads?

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