Geometric Progression (GP)
Definition
A sequence of numbers where each term after the first is obtained by multiplying the preceding term by a fixed non-zero constant called the Common Ratio (r). General term: Tn = ar^(n−1). Sum: Sn = a(rⁿ−1)/(r−1) for r ≠ 1.
Example
"The sequence 3, 6, 12, 24, 48... is a GP with a = 3 and r = 2. The 6th term = 3 × 2^5 = 96."