Practice Hall
Pick a difficulty and how many exercises you want, then start a session drawn from the practice backlog.
Difficulty
Quantity — 15 of 27 available
What auto-mix will draw
27 exercises available across 11topics. Since you haven't completed any levels yet, there's no history to weight against — this pulls a general spread across everything currently available. Once progress tracking exists, auto-mix will lean on your pass rate and practice history instead.
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