Method 1: Since the soup bowl occupies the largest number of people, let's start with the soup bowl. Suppose there are three people in a soup bowl. At this time, it is impossible to calculate the dish bowl (because there are two people in the dish bowl). So if there are two soup bowls and six people, we can calculate that there are six rice bowls and three vegetable bowls, which meet the question, so there are six children. Method 2: Because three people have a soup bowl and two people have a dish bowl, at least six people are needed to see if the operator meets the meaning of the question. If it does not match, it is 12. In short, the number of people should be a multiple of 2 and a multiple of 3.