One of the most important and exam oriented question from Chapter name- Arithmetic Progression
Chapter number- 9
Exercise :- 9.6
This type of question has been asked in previous years exams.
In this question we have been given that there be an A.P.
first term a and common difference d.
Also, If an denotes its nth term and Sn is the sum of first n terms,
Now we have to find n and an, if a = 2, d = 8 and Sn = 90
CBSE DHANPAT RAI publication
CBSE Mathematics Class 10th