2. What is the ‘rule of 2’s’ with regard to Meckel’s diverticulum? Posted on April 28, 2023 Correct answer: It occurs in 2% of the population, it is 2 feet (60 cm) from the caecum, it is 2 inches (5 cm) long. Post navigation Previous Post1. What is Meckel’s diverticulum? Next Post3. How might a Meckel’s diverticulum present?