Question

An auto dealership has cars of precisely 2 makes - “Toyota” and “Honda”. For each of these makes it has cars of 2 models (they are “Prius” and “Corolla” for Toyota, and “Civic” and “Accord” for Honda). All their cars have one of 2 possible colors (“Silver” and “Red”). They only have 2019 models. 9 people visit the dealership and buy cars. Show that some two people buy the exact same type of car, i.e., of the same make, model, year, and color.

Answer 1