Determine the IRR on the following projects:
An initial outlay of $10,000 resulting in free cash flow of
a) $1,993 at the end of each year for the next 10 years
b) $2,054 at the end of each year for the next 20 years
c) $1,193 at the end of each year for the next 12 years
d) $2,843 at the end of each year for the next 5 years