(IRR calculation​) Determine the IRR on the following​projects:
a. An initial outlay of $10,000 resulting in a single free cashflow of $16,863 after 7 years
b. An initial outlay of ​$10,000 resulting in a single free cashflow of $50,003 after 14 years
c. An initial outlay of ​$10,000 resulting in a single free cashflow of $114,691 after 23 years
d. An initial outlay of $10,000 resulting in a single free cashflow of ​$14,283 after 3 years
