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your age in different bases

 
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Lawless in Lotusland
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PostPosted: Mon 28 Jul, 2008 6:26 pm    Post subject: your age in different bases Reply with quote

The chart attached may be of interest: http://www.cs.rutgers.edu/~watrous/age-base.html. I personally like bases 11, 12 or 13, but I think anything but base 11 is unlikely to be too credible!

I was pondering that the chart doesn't calculate ages in bases 8 or 9 for those who want to be a bit older.



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ejm
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PostPosted: Tue 29 Jul, 2008 6:22 am    Post subject: Re: your age in different bases Reply with quote

Credible or not, I'm quite fond of base16 for relating my age. I was particularly happy this year when on our neighbour's birthday, we discovered that we are the same age (except his age was in base10 and mine was in base16) whoo hoo!

Lawless in Lotusland wrote:
I was pondering that the chart doesn't calculate ages in bases 8 or 9 for those who want to be a bit older.


It's quite easy to calculate this without a chart. For instance, for someone who is 16 in base10, that is two groups of 8 so in base8, the person is 20, and in base9, it's just short of two groups of 9 so the person is 18 in base9 (at least I think I'm calculating those correctly).

I would think either of these new ages would be very handy for the base10 16 year olds who wanted to buy a bottle of wine for their parents' dinner party.



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PostPosted: Tue 29 Jul, 2008 7:12 am    Post subject: Re: your age in different bases Reply with quote

ejm wrote:

It's quite easy to calculate this without a chart. For instance, for someone who is 16 in base10, that is two groups of 8 so in base8, the person is 20, and in base9, it's just short of two groups of 9 so the person is 18 in base9 (at least I think I'm calculating those correctly).


Your method works for 8, but not for 9. To calculate age 16 in base9, divide 16 by 9, giving 1 with 7 remainder, or age 17.
la la la


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Mats
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PostPosted: Tue 29 Jul, 2008 3:26 pm    Post subject: Hmmm... Reply with quote

I'm not sure that I remember the math involved here, but, if getting a calculation right can actually make me younger, heck, I'm going to review those Grade 10 textbooks right now!!!!



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Lawless in Lotusland
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PostPosted: Tue 29 Jul, 2008 10:04 pm    Post subject: Re: Hmmm... Reply with quote

MEF wrote:
I'm not sure that I remember the math involved here, but, if getting a calculation right can actually make me younger, heck, I'm going to review those Grade 10 textbooks right now!!!!


I prefer to use this calculator which goes down to base 2: http://www.cleavebooks.co.uk/scol/calnumba.htm (although I'm not sure I understand the letters that appear in some calculations).



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PostPosted: Wed 30 Jul, 2008 12:01 am    Post subject: Re: Hmmm... Reply with quote

Lawless in Lotusland wrote:


I prefer to use this calculator which goes down to base 2: http://www.cleavebooks.co.uk/scol/calnumba.htm (although I'm not sure I understand the letters that appear in some calculations).


The letters are representing digits following 9. You count 0 1 2 3 4 5 6 7 8 9 A B C D... until you reach your base. For base 12, you count ...7 8 9 A(10) B(11) and then you reach 10 (12).

So my favourite number "twenty eleven" could be written as 2B. Or not 2B. la la la


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