Advanced Challenge

Analyze the patterns and solve the equations!

1) Solve
CXCVI
2) Solve
DCCCXXI
3) Solve
DCCCVII
4) Solve
CXXVII
5) Solve
CLXVII
6) Solve
526
7) Solve
754
8) Solve
DIX
9) Solve
984
10) Solve
CXXXIII
11) Solve
24
12) Solve
381
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