Found out 200 + 200 = 5. How?

sonhouse
Posers and Puzzles 11 Apr '06 15:07
1. sonhouse
Fast and Curious
11 Apr '06 15:07
I hope you didn't read a certain recent thread where I figured it out!
2. 11 Apr '06 15:12
Originally posted by sonhouse
I hope you didn't read a certain recent thread where I figured it out!
How?
3. 11 Apr '06 15:13
Originally posted by sonhouse
I hope you didn't read a certain recent thread where I figured it out!
If you by "=" mean "equal to" by standard base ten arithmetics I wold say that this postulate is false.

If you by "200" mean "5 halfves" then all make perfectly sense (!)
If you by "5" mean "four hundred" then all make perfectly sense (!)
If you by "+" mean any operation that make 200+200=500 then all make perfectly sense (!)

In any other case 200+200 is not = 5. (?)
4. sonhouse
Fast and Curious
11 Apr '06 15:29
Originally posted by FabianFnas
If you by "=" mean "equal to" by standard base ten arithmetics I wold say that this postulate is false.

If you by "200" mean "5 halfves" then all make perfectly sense (!)
If you by "5" mean "four hundred" then all make perfectly sense (!)
If you by "+" mean any operation that make 200+200=500 then all make perfectly sense (!)

In any other case 200+200 is not = 5. (?)
AH, clearly you did not read the recent thread where I figured it out.
Good, that makes it a real puzzle for you,
So its two hundred plus two hundred equals 5 in base ten. Its a regular addition and the = sign is a normal run of the mill equal sign and the 5 is a standard issue base ten 1 2 3 4 5 kind of integer.
So whats going on?
5. 11 Apr '06 16:24
Originally posted by sonhouse
AH, clearly you did not read the recent thread where I figured it out.
Oh, but I did!

I wrote "in standard base ten arithmetics", didn't I?
That means exactly as it says.
If 200+200=5 - then it isn't in any standard base ten arithmetics, how could it?

Are we talking solid mathematics here or some kind of kindergarten counting?
6. sonhouse
Fast and Curious
11 Apr '06 16:40
Originally posted by FabianFnas
Oh, but I did!

I wrote "in standard base ten arithmetics", didn't I?
That means exactly as it says.
If 200+200=5 - then it isn't in any standard base ten arithmetics, how could it?

Are we talking solid mathematics here or some kind of kindergarten counting?
Well, semi-solid math anyway! Its a real representation, mathematically correct.
7. 11 Apr '06 17:46
Originally posted by sonhouse
Well, semi-solid math anyway! Its a real representation, mathematically correct.
Well, then I have to wait for the solution.

I asked my math professor: "What is 200 + 200, professor?" And he said "If you don't know that, you have to start from the low grade beginning again. Approximatly 400, of course!" Approx? Yes, he teaches numerical methods...

My local banker probably believs it, I think.
"If I save 200 Euro one month and saves 200 Euro next months, how much money do I have in my accont thereafter?"
8. sonhouse
Fast and Curious
11 Apr '06 18:12
Originally posted by FabianFnas
Well, then I have to wait for the solution.

I asked my math professor: "What is 200 + 200, professor?" And he said "If you don't know that, you have to start from the low grade beginning again. Approximatly 400, of course!" Approx? Yes, he teaches numerical methods...

My local banker probably believs it, I think.
"If I save 200 Euro one month and s ...[text shortened]... my accont thereafter?"
hehe, good one. I hear the taxes in Ireland are 55%. I would like to retire there some century, apparently not this one however!
And of course in base ten your professor is correct. OOPS I just threw in a big hint.ðŸ™‚
9. 11 Apr '06 18:20
Originally posted by sonhouse
And of course in base ten your professor is correct. OOPS I just threw in a big hint.ðŸ™‚
The smallest base you can use a symbol "5" in is base 6.
200 in base 6 is 72 in base 10. 72+72 in base 10 is 144 in base 10 which is in base 6 ... far more than 5 anyway. And in higher bases the difference is even more.

Are we talking base or modulus? I think you are using modulus arithmetics, am I right?
10. sonhouse
Fast and Curious
11 Apr '06 18:24
Originally posted by FabianFnas
The smallest base you can use a symbol "5" in is base 6.
200 in base 6 is 72 in base 10. 72+72 in base 10 is 144 in base 10 which is in base 6 ... far more than 5 anyway. And in higher bases the difference is even more.

Are we talking base or modulus? I think you are using modulus arithmetics, am I right?
Its not modulus, its a base thing. You have to make one mental jump though.
11. 11 Apr '06 18:45
Originally posted by sonhouse
Its not modulus, its a base thing. You have to make one mental jump though.
Well, than I have to wait for the answer, but in my mathematical world I don't think there is any indisputable answer
12. sonhouse
Fast and Curious
11 Apr '06 18:48
Originally posted by FabianFnas
Well, than I have to wait for the answer, but in my mathematical world I don't think there is any indisputable answer
Ok, here is a hint: base systems don't have to use integers.
13. 11 Apr '06 20:19
Originally posted by sonhouse
Ok, here is a hint: base systems don't have to use integers.
I wrote "in standard base ten arithmetics", didn't I?
That means the decimal base system, not binary, not octally, not hexadecimally, but decimally with the base of ten.

I know of course that A hexadecimally means 10 decimally, no funny with that. In binary 1 + 1 = 10 but now we are talking of base ten arithmetics, didn't we?

So if 200+200=5, then it is not plain old fashion base ten arithemtics we're talking about...? And that is exactly what I've said from the beginning.

Now, am I right or am I right?
14. sonhouse
Fast and Curious
11 Apr '06 20:27
Originally posted by FabianFnas
I wrote "in standard base ten arithmetics", didn't I?
That means the decimal base system, not binary, not octally, not hexadecimally, but decimally with the base of ten.

I know of course that A hexadecimally means 10 decimally, no funny with that. In binary 1 + 1 = 10 but now we are talking of base ten arithmetics, didn't we?

So if 200+200=5, then ...[text shortened]... ? And that is exactly what I've said from the beginning.

Now, am I right or am I right?
If you note, I said the 5 is in base ten. hint hint.
15. leisurelysloth
Man of Steel
11 Apr '06 21:432 edits
Does 200 = 200 or are these in different bases as well? It would seems that there might be multiple "correct" answers.

EDIT: If 200 = 200, then 200 = 2.5,
or 100 = 1.25 or 5/4, so it would seem that the base is (5/4)^0.5

This would be an odd counting system, however, as:

100 = 1.25
200 = 2.5
1000 = ~1.4

200 > 1000 ???

Or perhaps my math is wrong.... ðŸ˜ž It's been about 10,000,000,000,000,000,000,000 years since I took any math classes! ðŸ˜µ