Question

Find the sum of the A.P : –5 + (–8) + (–11) + . . . + (–230)

Answer 1

Answer:

Explanation:

according to me your answer is 17

Answer 2

l=a+(n−1)d

−230=−5+(n−1)−3

−225=−3n+3

3n=228

n=76.

Now,  

Sum of the series  =  

2

n

​  

(a+l)

 76/2(−5−230)

38×−235=−8930.

So, the sum of your series would be −8930