Geometric Progression, GP

Geometric progression (also known as geometric sequence) is a sequence of numbers where the ratio of any two adjacent terms is constant. The constant ratio is called the common ratio, r of geometric progression. Each term therefore in geometric progression is found by multiplying the previous one by r.

Eaxamples of GP:

• 3, \, 6, \, 12, \, 24, \dots \, is a geometric progression with r = 2
• 10, \, -5, \, 2.5, \, -1.25, \dots \, is a geometric progression with r = -\frac{1}{2}