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What is the probability of rolling the number 20 on a 20-sided die?

User ZK Zhao
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Answer:

Without advantage the odds are simple: the chances of each number turning up on a d20 are 5%. The chance of rolling a natural 20 is 5%. The chance of suceeding at a DC 10 task is 55% (5% * 11 values on the die).

Explanation:

User Krp
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