Three are a group. On the basis of the first group 1, 2, and 3, the number of each group 1 is increased by 1 in turn, the number of each group 2 is multiplied by 2 in turn, and the number of each group 3 is increased by 3 in turn.

The above topics belong to primary school olympiad math problems. The International Olympic Mathematics Competition was founded in 1959. It is an international mathematics competition for middle school students and the oldest international science Olympics. The purpose of the International Olympic Mathematics Competition is to discover and encourage young people with mathematical talents in the world, create conditions for scientific education exchanges among countries and enhance the friendly relationship between teachers and students in various countries.

According to the latest policies and regulations of the Ministry of Education and the education department, all parts of the country have carried out activities to ban Olympic math classes according to law, but the so-called activities of paying money to participate in competitions are mostly false.

If you find that there are still Olympic math classes in various places, please call the local education department immediately to report. Individuals who want to participate in regular competitions can ask the local education department. In order to avoid being deceived, don't take part in the so-called Olympic math class or Olympic math competition at will.