th
17. If 12th term of an A.P.is -13 and the sum of the first four terms is 24, what is the sum of
first 10 terms ?​

1 thought on “th<br />17. If 12th term of an A.P.is -13 and the sum of the first four terms is 24, what is the sum of<br />first 10 terms ?​”

1. I try but I don’t know the answer

   Reply