📅 NSB 2017🎓 HS🔄 Round 14#️⃣ Q10❓ TOSS-UP✍️ Short Answer
Consider a bag of 7 marbles, 5 red and 2 white. You draw marbles from the bag until you draw the last white marble, at which point you stop. What is the probability you stop drawing after the second marble is selected?
✔️Answer:1/21
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