List of C Sharp Kata to Update

The following kata needs to fixed to enable C# 7.3. Any help will be appreciated.

1. 2-Sum Sums
2. 5 without numbers !!
3. Aurecchia Mathematical question chapter 1
4. Basics 07: Calculate Sin(x) - too easy?
5. Between Extremes
6. change for pizza
7. Count the likes
8. Counter-Strike SeriesI
9. Create a simple Class at Runtime
10. Dictionary Merge
11. Fibonacci
12. Fibonacci sequence with Linq
13. Graphics 04: Complete Function Grapher (~15 Lines of Code?!)
14. Is number a palindrome?
15. Leap year
16. Linear equations N x M, complete solution space, fraction representation
17. Number Zoo Patrol
18. Padovan numbers
19. Palindrome chain length
20. Pell Numbers
21. Polygon Orientation
22. Reflection #2 - Give me all methods
23. Reflection #3 - Add the member-results
24. Reflection #4 - Complete-Invoke
25. RunTime Compiler
26. Simple Fun #174: Unlucky Number
27. Simplexer
28. To buy or not to buy
29. Whos the TIC TAC TOE champion?