1: This path is 100 meters long. How many seedlings can be planted every 5 meters (both ends)? 2. Students do exercises. The distance from the first person to the last person in a vertical line is 24 meters, and the distance between every two people is 2 meters. How many people are there in this line? Gardeners planted trees along one side of the road, one every 6 meters, one by one, and planted 36 trees. How far is it from 1 tree to the last one? 4. 1. The length of wood shall be10m, and it shall be divided into five sections on average. It takes 8 minutes to saw the next section, and how many minutes does it take to see the next section? 5. Plant trees in front of the teaching building, and plant a tree every 4 meters. How many trees can be planted within 20 meters?