Rule of three

• Agatha Christie
• Jason_Hazeley_and_Joel_Morris
• Rule of Three (Wicca)
• Rule of thirds
• Rule of thirds (diving)
• Rule of thirds (military)
• Rule of three (C++ programming)
• Rule of three (aviation)
• Rule of three (computer programming)
• Rule of three (economics)
• Rule of three (hematology)
• Rule of three (mathematics)
• Rule of three (medicinal chemistry)
• Rule of three (statistics)
• Rule of three (writing)
• Rule of threes (survival)
• The Hunting of the Snark
• Three-sigma rule
• Triumvirate