Engineering Economics
Which of these gives the lowest effective rate of interest?

11.90 % compounded annually
12.20 % compounded annually
12.35 % compounded annually
11.60 % compounded annually

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Engineering Economics
Perfect monopoly exists only if:

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

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