Projects M and N from Gamma Ltd have the following projected cash flows:

End of Year	Project M	Project N
0	-4000	-4000
1	1000	1500
2	1000	1500
3	2000	2000
4	3000	2500

Requirements:

1. Determine the IRR for each project.
2. Calculate the NPV at discount rates of 9%, 18%, and 22%.