Question

If the first term is -5 and common difference is2 Then the sum of first 6 terms is

Answer 1

Given, a= -5 , d= 2
Then, Sum of 6 Terms will be
s6=6÷2[-10+(6-1)2]
s6=3[-10+10]
s6=3×0=0
Hence, sum of 6 terms will be 0