Difficulty Class

For every ability check, the GM decides which of the six abilities is relevant to the task at hand and the difficulty of the task, represented by a Difficulty Class. The more difficult a task, the higher its DC.
The Typical Difficulty Classes table shows the most common DCs.

Typical Difficulty Classes

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Task Difficulty	DC
Very easy	5
Easy	10
Medium	15
Hard	20
Very hard	25
Nearly impossible	30