Reasoning
Geometric Progression nth Term
Find a term in a geometric progression.
aₙ = arⁿ⁻¹
Formula Explanation
Each term is obtained by multiplying the previous term by a constant ratio.
Variables Explained
a = First term; r = Common ratio; n = Term position.
Solved Example
Find the 5th term of 2, 6, 18, ...
a₅ = 2 × 3⁴ = 162.