Engineering Economics
If ‘P’ is principal amount, ‘i’ is the rate of interest and ‘n’ is the number of periods in years, then the interest factor is:

ni
None of these
(1 + ni)
(ni - 1)

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Engineering Economics
In a cash flow series:

Uniform gradient signifies that an income or disbursement changes by the same amount in each interest period
The gradient in the cash flow may be positive or negative
All of these
Either an increase or decrease in the amount of a cash flow is called the gradient

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