(1) Regarding the problem of planting trees, it should be noted that if the starting point and the end point are planted, the number of trees is more than the number of intervals 1.

(2) If no trees are planted at the starting point and the ending point, the number of trees is less than the interval number 1.

(3) If the starting point and the ending point coincide, the tree of the tree is equal to the interval number.

When solving this kind of application problem, we should see clearly the requirements of the problem, and then find a solution to the problem according to the relationship between the number of trees and the number of intervals and the known conditions.

Example A road is 72 meters long, and one side of the road is planted every 8 meters 1 pine tree. How many pine trees can be planted from beginning to end?

Train of Thought Navigation: If you plant a tree every 8 meters, there will be 9 eights in 72 meters. This nine actually divides 72 meters into 9 intervals on average. Because you have to plant trees from beginning to end, the number of trees is more than the interval number 1, that is, 9+ 1= 10 (trees), that is, the number of trees is more than the interval number 1.

Solution: 72÷8+ 1= 10 (tree).

A: A * * * can plant 10 pine trees.