Question

of an AP. are 6 and 3
First term and common difference
respectively. Find S27
Solution :
First term = Q =
= d = 3, S27
6, common difference
Sn
[ ] + (m - 1)4]
(n-1)d] -- formula
[12 + (27 – 1)
S27
27
х
2
= 27 x 45
S27​

Answer 1

Step-by-step explanation:

in my opinion my answer is wrong