Millega võrdub rooma number XXXIX?
Rooma number XXXIX võrdub arvuga 39:
XXXIX = X+X+X+(X-I) = 10+10+10+(10-1) = 39
Rooma number X on võrdne arvuga 10:
X = 10
IX on võrdne X miinus I:
IX = X-I = 10-1 = 9
Seega on rooma number XXXIX võrdne 39-ga:
XXXIX = 39
| Number | Rooma number |
Arvutus |
|---|---|---|
| 0 | määratlemata _ |
|
| 1 | I | 1 |
| 2 | II | 1+1 |
| 3 | III | 1+1+1 |
| 4 | IV | 5-1 |
| 5 | V | 5 |
| 6 | VI | 5+1 |
| 7 | VII | 5+1+1 |
| 8 | VIII | 5+1+1+1 |
| 9 | IX | 10-1 |
| 10 | X | 10 |
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