Question $1($Mandatory$)(1$ point$)$

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Suppose an industry has $100$ firms and each firm has $1\%$ of the market share, what is the HHI index for this industry?

Question $1$ options:

Question $2($Mandatory$)(1$ point$)$

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Suppose an industry has $4$ firms and the firms have $40\%,30\%,20\%$ and $10\%$ of the market share, what is the HHI index for this industry?

Question $2$ options:

Question $3($Mandatory$)(1$ point$)$

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If the third and fourth firms in the industry above merge, what is the new HHI index for this industry?

Question $3$ options:

Question $4($Mandatory$)(1$ point$)$

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What is the largest possible number for HHI index?

Question $4$ options:

Question $5($Mandatory$)(1$ point$)$

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What is the HHI for the cellular wireless industry? $($use the following stats:

Verizon$37\%$T$-$Mobile$31\%$AT&T$29\%$Others$3\%$

and treat Others as one company.$)$

Question $5$ options:

Question $6($Mandatory$)(1$ point$)$

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If ATT merges all the others, what is the HHI for the cellular wireless industry?$$

Question $6$ options: