Question

What is the fifth term of the geometric sequence where a1=4,096 and the common ratio is -1/4

Answer 1

16

Explanation:

If the first term a1 and the common ratio -1/4 are known, then a(n) = a1*r^(n-1).

Here we have a(n) = 4096(-1/4)^(n-1).

Thus, a(5) = 4096(-1/4)^4 = 16