Number of terms
=(23-(-82))/5+1
=22
Sum = (first term + last term)*number of terms / 2
=(23+(-82))*22/2
=-59*11
=-649
Find the sum of the series 23 + 18 + 13 + . . .+ (-82)
A) -590
B) 590
C) -649
D) 649
3 answers
Thanks. Mange to figure it out. Got the same answer as you.
You're welcome!
How did you do it?
How did you do it?