Question

Sum of 27 terms of an A.P. is 1215. common difference is 3 then find out the terms of A.P.​

Answer 1

Step-by-step explanation:

n=27

Sn = 1215

d=3

a=?

Sn= n/2(2a + (n-1)d)

1215 = 27(a + 13*3)

1215/27 = a + 39

45 = a + 39

a= 45-39

a=6

terms of ap are,

6,9,12,15,------,78