Mathematics, 25.08.2020 02:01 shaylawymannnnn

A magician has 20 coins in his pocket. Twelve of these coins are normal fair coins (with one head and one tail) and eight are defective coins with heads on both sides. The magician randomly draws a coin from his pocket and flips it. Given that the flipped coin shows a head, what is the probability that it is defective?

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A magician has 20 coins in his pocket. Twelve of these coins are normal fair coins (with one head an...