Engineering Economics
Perfect monopoly exists only if:

the single vendor is the only one who has the permit to sell
the single vendor can prevent the entry of all other vendors in the market
the single vendor is the only one who has the knowledge of the product
the single vendor gets the absolute franchise of the product

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Engineering Economics
The financial analysis:

Helps a bank to know the financial position of the firm for granting a loan to the firm
Helps a share holder to compare the expected return on his investment in the firm against the expected return from other alternative investment
Helps to judge the success of the firm's financial plans
All of these

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Engineering Economics
Current ratio is:

None of these
(Current assets + loans advances)/Current liabilities
(Current assets + loans)/Current liabilities
Current assets/Current liabilities

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