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Version: 1
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"Stop trying to think so much in complicated math and fall back on common sense.  I spin one fair coin, 50% chance of Queen, 50% of Text.  If it comes up Queen, I take out a new coin that's biased to have a 60% chance of coming up Queen.  If it comes up Text, I take out a different new coin that's biased to have a 40% chance of coming up Queen.  You don't get to observe the prior coinspin.  What's your betting chance that, when I spin the new coin, it shows up Queen?"

Version: 2
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"Stop trying to think so much in complicated math and fall back on common sense.  I spin one fair coin, 50% chance of Queen, 50% of Text.  If it comes up Queen, I take out a new coin that's biased to have a 60% chance of coming up Queen.  If it comes up Text, I take out a different new coin that's biased to have a 40% chance of coming up Queen."

"Suppose I was actually going to carry out that procedure.  You don't get to observe the prior coinspin.  What's your betting chance that, when I spin whichever new coin I take out, it shows up Queen?"

Version: 3
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"Stop trying to think so much in complicated math and fall back on common sense.  I spin one fair coin, 50% chance of Queen, 50% of Text.  If the first coin comes up Queen, I take out a new coin that's biased to have a 60% chance of coming up Queen.  If the first coin comes up Text, I take out a different new coin that's biased to have a 40% chance of coming up Queen."

"Suppose I was actually going to carry out that procedure.  You don't get to observe the prior coinspin.  What's your betting chance that, when I spin whichever new coin I take out, it shows up Queen?"