First, cut all 30 apples into pieces and weigh the total weight. Then divide the total weight by 3 1 to get the weight of each part. In this way, it can be evenly distributed according to the weight. Although this is fair in form, it is actually a loss, and Apple cannot keep it for a long time.
2. Make 3 1 sheet of paper, of which 30 sheets are written "Yes" and 1 sheet is written "No", and then please draw lots. Students who draw "Yes" can get an apple, while students who draw "No" can't get an apple. In this way, it is fair to decide the chance to get an apple by drawing lots (many times in sports competitions, some important things are decided by drawing lots). However, if the weight of each apple is different, it is unfair to the 30 people who get the apple.
Third, if someone voluntarily gives up the opportunity to get apples after learning this situation, the remaining 30 people all say that it doesn't matter how many apples they get. In this case, no matter who gets the apple or doesn't get it, no matter who gets the weight of the apple, everyone is psychologically balanced. Personally, I think this is a kind of fairness, because everyone has got the psychological feelings and realistic situation they want.
Fourthly, from another point of view, there are only 30 apples in 3 1 class, so it is difficult to be fair how to distribute them. This puts forward new and higher requirements for people who buy apples; When buying in the future, they should try to choose apples with similar weight and try to buy apples with 3 1; If you can't meet the above requirements, you can choose to buy other goods to facilitate fair distribution.
The above suggestions are for reference only.