# Geometric Sequences - Page 3

Questions

- What is the common ratio of the geometric sequence 7, 28, 112,...?
- How do you use the geometric sequence of numbers 1, 2, 4, 8,…to find r, the ratio between 2 consecutive terms?
- If a[1]=4 and r=2, what are the first four terms of the geometric sequence?
- How do you write the formula for the nth term given 8, -16, 32, -64,...?
- The first term of a geometric sequence is 40, and the common ratio is 0.5. What is the 5th term of the sequence?
- How do you find the first five terms in the geometric sequence which is such that the sum of the 1st and 3rd terms is 50, and the sum of the 2nd and 4th terms is 150?
- How do you find two geometric means between 4 and 64?
- How do you identify 19th term of a geometric sequence where a1 = 14 and a9 = 358.80?
- What is the 12th term of a geometric sequence where #a_1 = 8# and #a_6 = -8,192#?
- A community has a population of 25000 which increases by 15% every year. What will be the population of the community after 6 years?
- How do you write an equation for the nth term of the geometric sequence #64,16,4,....#?
- What is the eighth term of the geometric sequence whose first three terms are 3, 6 and 12?
- How do you determine if the sequence is arithmetic, geometric, or neither: 96, 48, 24, 12, 6, 3, 1.5, .75?
- Is the following a geometric sequence 1.5, 2.25, 3.375, 5.0625,…?
- The 15th term of an arithmetic series is 52, and the sum of the first 15 terms is 405 how do you find the sum of the first 22 terms?
- How do I find the common ratio of a geometric sequence?
- How do you find the 10th term in the geometric sequence 25, 5, 1, 0.2, ...?
- The first term of a geometric sequence is 320, and the common ratio is 0.5. What is the 5th term of the sequence?
- How do you find the 8th term in this geometric sequence 8, 4, 2, 1, ...?
- How do you find the explicit formula and calculate term 20 for 3, 9 , 27, 81, 243?