Discussion
If the sum of n terms of an A.P. is 210 and the sum of its first n-1 terms is 171, find its nth term.
Answer: A
The nth term of a series is the difference between the sum of the first n terms and the sum of the first n-1 terms. \(a_n = S_n - S_{n-1}\). Given \(S_n = 210\) and \(S_{n-1} = 171\). Therefore, \(a_n = 210 - 171 = 39\).
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development