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There are three coins. One is two -heate...

There are three coins. One is two -heated coin (having head on both faces), another is a biased coin that comes up heads 75% of the times and third is also a biased coin that comes up tails 40% of the times. One of the three coins is chosen at random and tossed, and it shows heads. What is the probability that it was two-headed coin?

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