Question

If Sn and Sn-1 are given then, what is Sn - Sn-1​

Answer 1

Answer:

Sn - Sn-1 = an

Step-by-step explanation:

an = Sn – Sn-1 where, Sn is the sum of first n terms of the A. P. and Sn-1 is the sum of the first (n – 1) terms of the A. P.

Hope it helps you!

Answer 2

Answer:

$sn - sn - 1 = an$