This should be a brain teaser, after all, it is aimed at kindergarten children, and the difficulty will not be too great. The number 8 has two circles and the number 9 has one circle, so 2889=5.

Brainstorming is a puzzle game. Puzzle games usually exercise players' brains, eyes and hands in the form of games, so that children can get physical and mental health and enhance their logical analysis ability and thinking agility. It is worth mentioning that excellent puzzle games are also very entertaining, both fun and durable.