- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Find:
10th term of the A.P. $-40, -15, 10, 35, ……..$
Given:
Given A.P. is $-40, -15, 10, 35, ……..$
To do:
We have to find the 10th term of the given A.P.
Solution:
Here,
$a_1=-40, a_2=-15, a_3=10, a_4=35$
Common difference $d=a_2-a_1=-15-(-40)=-15+40=25$
We know that,
nth term $a_n=a+(n-1)d$
Therefore,
10th term $a_{10}=-40+(10-1)(25)$
$=-40+9\times25$
$=-40+225$
$=185$
The 10th term of the given A.P. is $185$.  
Advertisements