1. На рынке действует 8 фирм. Объем их продаж представл

1. There are 8 companies operating on the market. The volume of their sales is shown in the table.

Firm

1

2

3

4

5

6

7

8

Sales volume, billion rubles.

100

90

80

130

70

60

110

50

According to the table:

1) Calculate the Herfindahl-Hirschman index.

2) Determine the market structure of the industry.