1. In the present and future value formulas for constant growth annuities, if k=0, then are the formulas the same as those for ordinary annuities?

2. If a loan has a 10-year amortization period with a fixed interest rate, will the interest paid in the eighth year be equal to the interest paid in the fifth year?

3. In loan amortization, does the ratio of principal to interest in each equal payment increase or decrease with time?

4. For a given n, PMT and i, is the present value of a deferred annuity the same as the present value of an ordinary annuity?

5. In a deferred annuity, is the original value or the future value used to calculate payments that commence at the end of the deferral period?