Question

A geometric sequence with a fifth term of 1/3 and a constant ratio of 1/3

Answer 1

We know that a 5 = 1/3 and r = 1/3
a 5 = a 1 * r^4
1/3 = a 1 * 1/3^4
1/3 =  a 1 * 1/81
a 1= 1/3 : 1/81 = 1/3 * 81 = 27
Answer: 
Geometric sequence is: 27, 9, 3, 1, 1/3, 1/9, 1/27,...