number4d1 4D 4D 1.1. THE BASIC IDEA 4D is a simple game of chance. 1. Pick a 4-dit number from 0000 to 9999, e.g. 0138, 1012, 4318, 7766 or 9991. 2.Check out the list of the most frequently Toto 4D Numbers for First, Second and Third Prizes