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Basic Group Equations
- Total (Union) = Group A + Group B - Overlap (Intersection) + Neither
- Group X Only = Group X - Overlap (Intersection)
Three Group Equation for Overlapping Sets
- Total = G1 + G2 + G3 - Exactly Two Groups - 2(All Three) + None
Secondary Group Equation for Multiple Categories
- Total = Exactly One Category + Exactly Two Categories + All Three Categories
- Can be Extrapolated to Any Number of Characteristics
- Note for Savvy Shortcuts in Solving for Complex Group Word Problems