For questions 14, use the information provided to determine whether an annuity exists.

1. A debt of four payments of $500 due in 6 months, 12 months, 18 months, and 24 months.

2. A debt of four quarterly payments in the amounts of $100, $200, $300, and $400.

3. Contributions to an RRSP of $200 every month for the first year followed by $200 every quarter for the second year.

4. Regular monthly deposits of $250 to an RRSP for five years, skipping one payment in the third year.