This is a game where you have to touch the numbers 7, 14, and 21 as quickly as possible in 30 seconds.It requires a high level of concentration and agility, and is very helpful for brain activity.If you want to teach parents and children how to use quick brains, it can be used as a fun and competitive learning tool.It can be done in just 30 seconds at a time to kill time, so anyone can use it easily and simply.
무한숫자 - 7단
