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169 or 147?

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Poll Question: Which one do you prefer?
Poll Choice Votes Poll Statistics
4 [44.44%]
5 [55.56%]
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Snow Dog View Drop Down
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Post Options Post Options   Quote Snow Dog Quote  Post ReplyReply Direct Link To This Post Topic: 169 or 147?
    Posted: December 22 2011 at 10:42
Originally posted by harmonium.ro

Originally posted by Padraic

Originally posted by harmonium.ro

Originally posted by Padraic

Originally posted by harmonium.ro

Originally posted by refugee

They are both correct.


How so? I might be missing something, I was never great at maths, but still...

You don't have to be great at maths to know the answer.


You know it was a metaphor meaning to say I was rubbish at maths and I actually do need explaining to get it. Wink

I'll let you guys have a bit more fun then I'll be waiting to be enlightened. :P I suppose it's all about "reading" it not like a subtraction but something else (which would explain the possibly eccentric position of the minus), but I don't know any other way to read it.

It's addition/subtraction in base 8, which means the only "numbers" you have available to you are 0 through 7.

So in base 8, 7+1=0, 7+2=1, 7+3=2, etc.

You can google modulo arithmetic to learn more.


Thanks Pat. I've never heard of this.

You must have. Surely you have heard of binary? Which is base 2. I think. You can have a system of any base including letters.
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Post Options Post Options   Quote harmonium.ro Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 10:46
^ Never. As for binary, I always thought it is a language that works based on the positioning of 0 and 1 inside sequences, I didn't know it also allows operations. Maybe that's something else, not "binary"? 
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Post Options Post Options   Quote Snow Dog Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 10:47
Originally posted by harmonium.ro

^ Never. As for binary, I always thought it is a language that works based on the positioning of 0 and 1 inside sequences, I didn't know it also allows operations. Maybe that's something else, not "binary"? 

Nope you got it.
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Post Options Post Options   Quote Padraic Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 10:58
Originally posted by harmonium.ro

^ Never. As for binary, I always thought it is a language that works based on the positioning of 0 and 1 inside sequences, I didn't know it also allows operations. Maybe that's something else, not "binary"? 

Binary is just the base 2 representation of a number, with operations similar to what I described earlier.

For example, in binary 1+1=10.  10+10=100, and so on.
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Post Options Post Options   Quote TheGazzardian Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 11:11
Originally posted by Padraic

Originally posted by harmonium.ro

^ Never. As for binary, I always thought it is a language that works based on the positioning of 0 and 1 inside sequences, I didn't know it also allows operations. Maybe that's something else, not "binary"? 

Binary is just the base 2 representation of a number, with operations similar to what I described earlier.

For example, in binary 1+1=10.  10+10=100, and so on.

Then there are bases greater than 10, like hexadecimal (base 16), where 9 + 1 = A.


Edited by TheGazzardian - December 22 2011 at 11:11
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Post Options Post Options   Quote Horizons Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 11:18
+1 to post count

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Post Options Post Options   Quote refugee Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 11:53
We also use a duodecimal system (base 12) every day: The calendar has 12 months, there are 12 hours on the clock face, we talk about dozens. I donít know if "The Twelve Days of Christmas" fits in here, though.
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Post Options Post Options   Quote Equality 7-2521 Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 12:04
Originally posted by TheGazzardian

 

Then there are bases greater than 10, like hexadecimal (base 16), where 9 + 1 = A.


The best example is probably a sexagesimal (60) system which we adopted from the Babylonians. You see remenints of it in our clocks and our measurement of angles. Though, our modernization of it still uses the arabic basic 10 system so it is not truly sexagesimal.


"One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. "
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Post Options Post Options   Quote Equality 7-2521 Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 12:08
Originally posted by Snow Dog


You must have. Surely you have heard of binary? Which is base 2. I think. You can have a system of any base including letters.


You can. A base "n" system merely is a way of writing a number so that the digits read from right to left correspond to increasingly higher powers of your base.

For example, in base "n",

tuvwxyz

just corresponds to the number

t*(n^6)+u*(n^5)+v*(n^4)+w*(n^3)+x*(n^2)+y*(n)+z

The only problem is that you need n unique digits for the representation. Even using our alphabet, we only get 36 and that is still actually very unnatural to use. I only see really high order bases in mathematical proofs. I am not sure of any real application of them.
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Post Options Post Options   Quote Padraic Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 12:56
Hexadecimal is the largest base I've seen in real world applications.
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Post Options Post Options   Quote refugee Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 13:14
Hey, this is a poll! You forget to vote! LOL

Sorry, I forgot to vote myselfEmbarrassed. I pick 147, not because itís more "progressive" but because itís more unusual. And because 169 is in the lead right now.
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Post Options Post Options   Quote sleeper Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 13:27
Originally posted by Equality 7-2521

Originally posted by TheGazzardian

 

Then there are bases greater than 10, like hexadecimal (base 16), where 9 + 1 = A.


The best example is probably a sexagesimal (60) system which we adopted from the Babylonians. You see remenints of it in our clocks and our measurement of angles. Though, our modernization of it still uses the arabic basic 10 system so it is not truly sexagesimal.



Interesting, I always thought the Babylonians used a base 12 system.


Edited by sleeper - December 22 2011 at 13:27
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Post Options Post Options   Quote Man With Hat Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 16:36
147 = Smoke
Dig me...But don't...Bury me
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Post Options Post Options   Quote Equality 7-2521 Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 18:18
Originally posted by sleeper


Interesting, I always thought the Babylonians used a base 12 system.


As far as I know they never used a 12, the Sumerians handed the system down to them when the Babylonians came into prominence. I'm not sure if eventually that was phased out for a base 12, but that seems unlikely.
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Post Options Post Options   Quote Padraic Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 19:52
Originally posted by refugee

Hey, this is a poll! You forget to vote! LOL

Sorry, I forgot to vote myselfEmbarrassed. I pick 147, not because itís more "progressive" but because itís more unusual. And because 169 is in the lead right now.


I voted 169 because base 8 is silly.
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Post Options Post Options   Quote manofmystery Quote  Post ReplyReply Direct Link To This Post Posted: December 22 2011 at 23:37
Originally posted by aginor

i have seen stranger pools
 
 
I was too lazy to find the links but I remember pitting the letters A and O against each other and also asking who would win a fight between a bear and octopus.
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Post Options Post Options   Quote The Dark Elf Quote  Post ReplyReply Direct Link To This Post Posted: December 23 2011 at 01:13
The answer is, and has always been, 42.
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