Question

1. What is the sum of the
first 25 terms of the A.P. 5, -7,
-19,- 31.......?
-3475
-3480
-3485
-3490​

Answer 1

Answer:

none of the option are correct so you must look at my answer and mark it as brainliest

Answer 2

Answer:

-283

Step-by-step explanation:

an=a+(n-1)d

Here, a=5, d=-7-5=-12, n=25

So, 5+(25-1)*(-12)

=-283