Roman Numeral Challenge

[IceyLava108]

Then how do you express the number 4, if you can't have four in a row and you can't do the lower-before-higher trick?

::Scratches head::

4 = IV

The I before the V means you subtract one from 5, equaling four.

[BitBuster]

...but you said earlier that you can't do that...



: /

[IceyLava108]

...but you said earlier that you can't do that...



: /

No I didn't :O

On Josh's first post, I corrected myself after I mistook his numeral for an invalid one.

IV (4) - The I behind the V means that you subtract I from V (1 from 5) getting 4.

IX (9) - The I behind the X means you subtract I from X (1 from 10) and get 9.

VI (6) The I in front of the V means you add I onto V (1 + 5) and get 6.

XI (11) The I in front of the X means you add I onto X (1 + 10) and get 11.

Understand now? :O

[geodave]

IIII is perfectly legal for 4.

[Hornlitz]

You got mine wrong

The last two are VI, not IV.

The number was 1666. Coincidentally, that was the year the great fire of London occurred :/

[IceyLava108]

You got mine wrong

The last two are VI, not IV.

The number was 1666. Coincidentally, that was the year the great fire of London occurred :/

With so many replies at once I must've read yours wrong. Sorry

IIII is perfectly legal for 4.

For tallies, yes. For Roman numerals, there is a rule that no more than three of the same numeral can be in a row.

So that's why 4 is VI, and 5 is V, and so on.

[BitBuster]

On Josh's first post, I corrected myself after I mistook his numeral for an invalid one.

Ok, that was where the misunderstanding occurred...

[geodave]

With so many replies at once I must've read yours wrong. Sorry



For tallies, yes. For Roman numerals, there is a rule that no more than three of the same numeral can be in a row.

So that's why 4 is VI, and 5 is V, and so on.

As mentioned before, it's not a "rule". It's a convenience of modern usage. Find a clock with roman numerals on the face and it will probably have IIII on the front.

[IceyLava108]

As mentioned before, it's not a "rule". It's a convenience of modern usage. Find a clock with roman numerals on the face and it will probably have IIII on the front.

Whatever it is

[KeyboardWielder]

How do you write 0 in Roman?