Select the type first, and then answer continuously.
1. In the primary school students' broadcast exercise queue, one row is 26 meters, and the distance between two adjacent students is 2 meters. How many students are there in this column?
Belong to ()
① Plant at both ends; ② Plant at one end; ③ Plant at both ends.
A: There is a student in this column.
2. In order to welcome Children's Day, the school is going to place flowers on both sides of the road 60 meters in front of the teaching building (one end is not placed against the wall), and the distance between two adjacent potted flowers is 3 meters. How many potted plants does a * * * need?
Belong to ()
① Plant at both ends; ② Plant at one end; ③ Plant at both ends.
A: A * * * needs potted flowers.
3. A piece of wood should 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?
Belong to ()
① Plant at both ends; ② Plant at one end; ③ Plant at both ends.
A: It takes several minutes to finish sawing.