Engineering Economics
Perfect monopoly exists only if:

the single vendor gets the absolute franchise of the product
the single vendor can prevent the entry of all other vendors in the market
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

ANSWER DOWNLOAD EXAMIANS APP

Engineering Economics
Which is NOT an essential element of an ordinary annuity?

The amounts of all payments are equal.
Compound interest is paid on all amounts in the annuity.
The payments are made at equal interval of time.
The first payment is made at the beginning of the first period.

ANSWER DOWNLOAD EXAMIANS APP