📅 NSB 2019🎓 HS🔄 Round 11#️⃣ Q5🌟 BONUS✍️ Short Answer
A jar contains 9 coins: 8 fair coins and 1 double-headed coin. If a random coin is selected from the jar, is flipped, and comes up heads, what is the probability that the double-headed coin was the one selected?
✔️Answer:1/5
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