Question

What must be true in order to find a sum for an infinite geometric series?

Answer 1

The law is

Common ratio or r must lies in between 0 and 1

It means

r is in (0,1)

• r is greater than 0 but less than 1

The formula is

$\boxed{\sf S_{\infty}=\dfrac{a}{1-r}}$

Answer 2

Answer:

0 < r < 1

Step-by-step explanation:

That every sequence gets multiplied by a number less than 1 but more than 0