There are 7 firms in a given market. Their respective market shares are the following:

(s₁,...,s₇) = (10%, 5%, 30%, 5%, 15%, 10%, 25%)

Determine the following market measure:

HHI = ...

3000 (or 0.3)

1500 (or 0.15)

10000 (or 1)

2000 (or 0.2)