Problem #PRU-61473

Problems Algebraic equations and systems of equations Algebra Higher order equations. Palindromic polynomial equations Equations of higher order (other) Real numbers Integer and fractional parts. Archimedean property Calculus
 12–14  2.0

Problem

A frog jumps over the vertices of the triangle \(ABC\), moving each time to one of the neighbouring vertices.

How many ways can it get from \(A\) to \(A\) in \(n\) jumps?