Question

if the sum of first 8 terms of an AP is 180 find the sum first and last terms?​

Answer 1

Answer:

The number of terms = 8

The sum = 180

Let the first term a and last term b

Now,

8/2(a+b)=180

i.e.

a+b = 180/4=45

Answer 2

Answer:

45.....................