The Floor is Lava!

Probability Level 2

The dragon Smaug says he will set you free if you roll a 7 or higher.

If you intend to survive, which would you rather roll: Two 10-sided dice (your score is the sum) or one 20-sided die?

1) The 10-sided dice are fair with sides numbered 0 to 9.
2) The 20-sided die is fair with sides numbered 1 to 20.


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