Advanced Challenge

Solve these problems to test your skills!

1) Solve
2
2) Solve
5
3) Solve
45
4) Solve
XLIII
5) Solve
XXVIII
6) Solve
4
7) Solve
IX
8) Solve
36
9) Solve
13
10) Solve
L
11) Solve
IV
12) Solve
17
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