Ask a New Question
Search
Questions and answers by
Alisha Naqvi
Questions (1)
In an A.P , the sum of first ten terms is (-80) and the sum of its next ten terms is (-280)Find the A.P
1 answer
843 views
Answers (2)
It is given that 4th term is 18 a4=18 a+3d =18 a=18-3d.......(1) Also, a15 -a9 =a+14d-1-8d=30 6d= 30 d=5 From (1), we get a= 18-15=3 Therefore the A.P is 3,8,13,18,23
Good enough to understand 💁👍👍
