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Re: Kinda Cool Numbers

Posted: Tue Jun 28, 2016 12:45 pm
by androl
I found a note:
XXa0a00a0007

Re: Kinda Cool Numbers

Posted: Mon Aug 01, 2016 8:37 pm
by evaldas1982
have one :flag-fr: :note-20: UEababbbbbbb 8) in unc, it was to consecutive notes!

Re: Kinda Cool Numbers

Posted: Mon Aug 22, 2016 8:02 pm
by NCIS!
Today I found:

:note-20: :flag-de: XAabaaaacaaa

Re: Kinda Cool Numbers

Posted: Wed Sep 07, 2016 8:59 am
by JHN-TX
:note-10: :flag-ie: T/TA aaabbbbbac
Galway

Re: Kinda Cool Numbers

Posted: Fri Oct 28, 2016 10:59 pm
by A0000001A
Seen on ebay

5€ VA abababacab
10€ XA aabaaabaab

Re: Kinda Cool Numbers

Posted: Wed Nov 02, 2016 10:49 pm
by scrtr
Today at work I got a

:note-5: :flag-be: ZB abbbbaaaab

Re: Kinda Cool Numbers

Posted: Mon Nov 07, 2016 10:35 am
by JHN-TX
:note-5: :flag-ie: T/TC aaaabbbbaa

Re: Kinda Cool Numbers

Posted: Tue Nov 08, 2016 7:54 am
by zimmerge
:note-10: :flag-nl: P/PA aaaaabaaca

Re: Kinda Cool Numbers

Posted: Tue Jan 03, 2017 5:03 pm
by Elmo
zbAABBCCDDEE

Re: Kinda Cool Numbers

Posted: Wed Apr 19, 2017 5:09 pm
by A0000001A
Today, I got a :note-10: :flag-de: XA with 1 of each numbers from 0 to 9 , e.g. XA0123456789 (for sure, mine is a mixed number)
... should be quite rare, I guess

Is anybody able to do the math, how many such notes do exist ? I'm not able to ...
It's only possible with XA, WB, UD, SF

Re: Kinda Cool Numbers

Posted: Fri Jun 02, 2017 1:31 pm
by lmviterbo
On any Euro banknote from the first series (2002), find the digital root of the serial number's digits (forget the initial letter).

The digital root is the value obtained by summing all the digits, then if the resulting sum has more than one digit summing these digits again, and so on, until a single-digit value is attained. "For example, the digital root of 65,536 is 7, because 6 + 5 + 5 + 3 + 6 = 25 and 2 + 5 = 7."

Here's a riddle: what is the value (from 1 to 9) you can never obtain on any Euro banknote from the first series (2002), when computing its digital root? In other words, what is the impossible digital root on Euro banknotes from the first series?

Here's a second riddle: on a :note-10: :flag-eu: (Europa series), what is the impossible digital root?

Re: Kinda Cool Numbers

Posted: Sat Jun 03, 2017 6:26 am
by Dioniz
lmviterbo wrote:Here's a riddle: what is the value (from 1 to 9) you can never obtain on any Euro banknote from the first series (2002), when computing its digital root? In other words, what is the impossible digital root on Euro banknotes from the first series?

Here's a second riddle: on a :note-10: :flag-eu: (Europa series), what is the impossible digital root?

1). 8

2). 8 (?). I guess (theoreticaly) all are still possible.

Re: Kinda Cool Numbers

Posted: Sat Jun 03, 2017 11:58 pm
by lmviterbo
Dioniz wrote:1). 8

2). 8 (?). I guess (theoreticaly) all are still possible.

1) Yes. The serial letter would have to be either I or R in that case.

2) No. 8 is the digital root in serial numbers on PA, UE and YA tenners. Theoretically, yes, all digital roots will eventually be possible. I don't think that's bound to happen in the near future though.

Re: Kinda Cool Numbers

Posted: Thu Jun 22, 2017 6:53 pm
by eddydevries
scrtr wrote:Today at work I got a

:note-5: :flag-be: ZB abbbbaaaab

I received earlier this week also this kind of number:
ZBABAAAAABAA

Re: Kinda Cool Numbers

Posted: Thu Jun 22, 2017 9:02 pm
by Moise
Me this days :ZB ababaabaab