Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**katecaroline****Member**- Registered: 2005-06-19
- Posts: 35

This is a pretty simple problem that my math teacher showed me a few years ago, but I thought it was funny Try your luck!

You're given the symbols IX. Using any one symbol what would you have to add to it to equal 6?

Here's a little background information on Roman Numerals in case you don't know much about them:

Roman Numerals

Roman numerals are written as combinations of the seven letters in the table below. The letters can be written as capital (XVI) or lower-case letters (xvi).

Roman Numerals

I = 1 C = 100

V = 5 D = 500

X = 10 M = 1000

L = 50

If smaller numbers follow larger numbers, the numbers are added. If a smaller number precedes a larger number, the smaller number is subtracted from the larger. For example:

* VIII = 5+3 = 8

* IX = 10-1 = 9

* XL = 50-10 = 40

* XC = 100-10 = 90

* MCMLXXXIV = 1000+(1000-100)+50+30+(5-1) = 1984

Good luck

» I always knew that looking back on the tears would make me laugh,

but I never knew looking back on the laughs would make me cry. «

<3

Offline

**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

Would this happen to be anything to do with manipluation of the roman symbols? I mean, by turing X into V and moving I, you can make 6.

Boy let me tell you what:

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

Offline

**katecaroline****Member**- Registered: 2005-06-19
- Posts: 35

Haha nope Remeber it's ANY symbol.. keep a VERY open mind about this one. I hated my teacher after this one XD

» I always knew that looking back on the tears would make me laugh,

but I never knew looking back on the laughs would make me cry. «

<3

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,664

BTW, you can convert from Roman to Decimal and vice versa at the bottom of this page

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Hee hee I know the anSwer...

Why did the vector cross the road?

It wanted to be normal.

Offline

**Mr T****Member**- Registered: 2005-03-30
- Posts: 1,012

mathsyperson wrote:

Hee hee I know the anSwer...

...subtle mathsyperson, i was confused until ur comment

I come back stronger than a powered-up Pac-Man

I bought a large popcorn @ the cinema the other day, it was pretty big...some might even say it was "large

Fatboy Slim is a Legend

Offline

**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Sorry, have I made it too obviouS?

By the way, I tried MIM on the numeral converter thingy, and it gave me 2001.

Why did the vector cross the road?

It wanted to be normal.

Offline

**Milos****Member**- Registered: 2005-05-06
- Posts: 44

Let's try putting V in the middle:

IVX = 10-(5-1)=6

?

Offline

**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

The numeral converter gives IVX as 14, but it's already been proven wrong once...

Why did the vector cross the road?

It wanted to be normal.

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,664

Ohhhh? So I am expected to go in and fix the darn thing? Just because you lot like feeding it numbers that a 6 year old roman kid would get a clip around the ears for scratching down?

Harrumph!

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,664

OK **fixed** - if you enter "MIM" it gives back 1999.

For "IVX" it gives 4, which is I less than V less than X (you can argue whether that is right or not amongst yourselves!)

Enjoy! *departs with swish of cape*

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**katecaroline****Member**- Registered: 2005-06-19
- Posts: 35

Lol, well IVX is indeed not the answer.. I think most of you already know it from mathsyperson's "unobvious" post, but I will tell you the answer if someone is still interested.

» I always knew that looking back on the tears would make me laugh,

but I never knew looking back on the laughs would make me cry. «

<3

Offline

**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

Me!

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

Offline

**katecaroline****Member**- Registered: 2005-06-19
- Posts: 35

Alrighty. Heh heh it's somewhat corny, but the symbol you enter in front of IX is an S. Get it? S + IX = SIX. AHAHAHA gets me every time ^.^

but I never knew looking back on the laughs would make me cry. «

<3

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,664

Aaarrgghh !

Very funny, kate caroline.

Got any more?

Offline

**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

That was just evil.

Boy let me tell you what:

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

Offline

**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Look, I made the converter go crazy!

99999=MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM

MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMCMXCIX

*Last edited by mathsyperson (2005-06-27 20:32:03)*

Why did the vector cross the road?

It wanted to be normal.

Offline

**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

The thing doesn't even have ten thousands or a hundred thousands!

Boy let me tell you what:

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

Offline

**katecaroline****Member**- Registered: 2005-06-19
- Posts: 35

Ahaha I know, I'm evil. *sigh* what can you do. Hrmmm I'll try and remeber some more my teacher gave us, they were all pretty awesome.

but I never knew looking back on the laughs would make me cry. «

<3

Offline

**Mr T****Member**- Registered: 2005-03-30
- Posts: 1,012

i must say that was purdy good

I come back stronger than a powered-up Pac-Man

I bought a large popcorn @ the cinema the other day, it was pretty big...some might even say it was "large

Fatboy Slim is a Legend

Offline

**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

Heehee! That was funny!

Does anyone want to hear the puzzle a friend told me today?

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

Offline

**stewie****Member**- Registered: 2005-03-28
- Posts: 820

NO.

Only kidding, go on tell us we're all dying to know.

HAPPY HAPPY, JOY JOY

Fatboy Slim is the band of the 90s, thats if you want to call it a band because its really a one man name

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,664

YES

Offline

**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

Yes is a word compromising of three letters leaning into a much more positive and affirmitive feel.

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

Offline

**justlookingforthemoment****Moderator**- Registered: 2005-05-26
- Posts: 2,161

YES!

Well, now, I suppose it's two to one, stewie.

*Last edited by justlookingforthemoment (2005-11-17 14:07:40)*

Offline