please don't use excel. thank you :)

(IRR calculation) Determine the IRR on the following projects: a. An initial outlay of $12,000 resulting in a free cash flow of $1,964 at the end of each year for the next 10 years b. An initial outlay of $12,000 resulting in a free cash flow of $2,019 at the end of each year for the next 19 years c. An initial outlay of $12,000 resulting in a free cash flow of $1,006 at the end of each year for the next 14 years d. An initial outlay of $12,000 resulting in a free cash flow of $2.913 at the end of each year for the next 6 years a. What is the IRR of a project with an initial outlay of $12,000 resulting in a free cash flow of $1,964 at the end of each year for the next 10 years? % (Round to two decimal places.)