A square marked 1, 2, 3 and 4 on its four sides

A square marked 1, 2, 3 and 4 on its four sides. Four colors pink, purple,brown and yellow are used to paint the four sides of the square. If the adjacent sides are painted with the different colors, in how many ways can the sides be painted?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #9906