Divisibility Rule of 6 - Methods, Examples | Divisibility by 69 Rules of Presentation Making: 10/20/30 Rule, 5x5 Rule, 6x6 Rule, 7x7 RuleThe 1-6-6 rule of slide presentation software such as PowerPoint6 Reasons the 6x6 Rule Works | Ethos3 - A Presentation Training andRule #6 - A Story. Spiritual Reminders from Bill Johnson