Cool brains: logic and intelligence

You will be offered a number of graphic drawings. There are 105 of them in total, they are grouped into 9 groups. Each group contains tasks of increasing difficulty. The quiz is designed to explore the logic of thinking. The result is the total number of correctly solved tasks. The resulting overall indicator is considered as an index of intellectual strength and mental productivity. Try to play with friends and find out who is the smartest among you!