The number of girls in the first team is exactly equal to the number of boys in the second team, so the number of boys in the first team is equal to the number of girls in the second team, so the sum of the numbers of boys in the first team and the second team accounts for half of the sum of the numbers of the first team and the second team, while the numbers of the three teams are the same, that is, the number of each team accounts for one-third of the total number of interest groups, so the sum of the numbers of the first team and the second team accounts for two-thirds of the total number of interest groups. Therefore, the sum of boys from Team One and Team Two accounts for 1/2×2/3= 1/3 of the total number of interest groups, and boys from Team Three accounts for two-fifths of all boys in interest groups, so boys from Team Three accounts for two-thirds of the sum of boys from Team One and Team Two, so boys from Team Three accounts for 65,438+of the total number of interest groups. And the total number of the third team accounts for 1 of the total number of interest groups, so the female students in the third team account for 1/3-2/9 = 1/9 of the total number of interest groups, while the third team has four female students, so the total number of interest groups is 4/( 1/.