Derive scored cross bin counts precisely, especially when default ignores, binsof/intersect filters, and illegal tuples alter denominator math.
1. Named cross bins that group tuples [Medium]
2. Pure auto cross count [Easy]
3. Explicit ignore_bins instead of a default catch-all [Medium]
4. intersect filter removes one tuple [Medium]
5. illegal cross tuple does not close coverage [Medium]
6. Three-way cross with overlapping ignore_bins [Medium]Work each puzzle before reading the solution: predict the exact output or answer, name the rule that governs it, then check yourself.