Question

In a school students thought of planting trees in and around the school to reduce air pollution.it was decided that the number of trees,that each section of each class will plant will be the same as the class in which they are studying like I class can plant only 1 tree and II class students can only plant 2 trees and it is for 12 classes so how many trees would plant by a school​

Answer 1

Answer:

1+2+3+4+5+6+7+8+9+10+11+12=58trees