Question

What is the sum of a common geometric series if the first term is 8 and the common ratio is 1/2?

Answer 1

Explanation:

32 i think

Answer 2

Answer: A

Explanation:

The sum to infinity of a geometric series is

S (∞ ) = \frac{a}{1-r} ( - 1 < r < 1 )

where a is the first term 8 and r is the common ratio, hence

S(∞ ) = {8}{1-\{1}{2} } = {8}{1}{2} } = 16