Summary: The probability of an event is the measure of the chance that the event will occur as a result of an experiment. The probability of an event A is the number of ways event A can occur divided by the total number of possible outcomes.
1 Place corned beef in large pot or Dutch oven and cover with water. Add the spice packet that came with the corned beef. Cover pot and bring to a boil, then reduce to a simmer. Simmer approximately 50 minutes per pound or until tender.  Add whole potatoes and carrots, and cook until the vegetables are almost tender.
In a 5-to-6-quart slow cooker, place celery, carrots, onion, potatoes, and thyme. Place corned beef, fat side up, on top of vegetables and sprinkle with pickling spice; add enough water to almost cover meat (4 to 6 cups). Cover and cook on high until corned beef is tender, 4 1/4 hours (or 8 1/2 hours on low). Arrange cabbage over corned beef, cover, and continue cooking until cabbage is tender, 45 minutes (or 1 1/2 hours on low).