1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
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 same as the class, in which they are studying, e.g., a section of class I will plant 1 tree, a section of class II will plant 2 trees and so on till class XII, If there are three sections of each class, then the number of trees planted is

A
78
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
234
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
39
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
156
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 234The number of tree planted by class I is 1×3. The number of tree planted by class II is 2×3. The number of tree planted by class III is 3×3. ⋮ The number of tree planted by class XII is 12×3. The total number of tree planted =3+6+9+…+36 Using sum of n terms formula of A.P. =122[3+36]=234

Suggest Corrections
32
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program