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

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

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Engineering Economics
Which one of the following questions is relevant to the construction estimates?

Did the estimators use short cut methods which may be unrealistic in their situation
All of these
Did the estimators precisely evaluate site conditions
How much money will the contractor's risk, loosing if he were to submit bid on the raw estimate of cost

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