Question

What is geometric progression?

Answer 1

In a Geometric progression each term is found by multiplying the previous term by a constant.
2, 4, 8, 16, 32, 64, 128, 256 ....
This sequence has a factor of 2 between each number.
Each term (except the first term) is found by multiplying the previous term by 2.
In general, we write a Geometric progression like this:
$\{a,ar,a{r}^2,a{r}^3,\dots \dots \}$
where:
a is the first term of GP and r is the common ratio of GP.