Question

Find the value of n for this geometric series

A-2/9
B-6
C-3
4-5

Answer 1

n = 5

Explanation:

5

∑

n = 1

means sum the expression inside from n = 1 to n = 5

that is ∑ (for n = 1) + ∑ (n = 2) + ∑ (for n = 3) + .... ∑ (for n = 5 )

the value of the upper is n = 5