Trivia: What is the most common color combination used in national flags?
Black and white
Blue, red, and white
Yellow and white
Green, red, and yellow
The correct answer is Blue, red, and white
So why is this answer correct? : There are 195 different national flags in existence, representing the colorful countries and cultures of the world. The U.S. flag shares its colors — red, white, and blue — with 30 other countries, making it the most frequently used color combination in national flags. The majority of countries (nearly 40%) use three colors in their flag designs.