Question

3.
The third term of an A.P. is 13 and 13th term is 4 more than thrice of its
third term. Find the sum of first 40 terms.
(a) 2620
(b) 2026
(c) 3080
(d) none of these​

Answer 1

Answer:

txt yntsri ye yfyv uhm you can do it for a few examples are in need in the

Answer 2

its the answer and sum of forty is none of these in options i think

thanks i hope it helps you