### Re: Kinda Cool Numbers

Posted:

**Tue Jun 28, 2016 12:45 pm**I found a note:

XXa0a00a0007

XXa0a00a0007

Follow your Euro notes in their tracks

https://forum.eurobilltracker.com/

Page **29** of **30**

Posted: **Tue Jun 28, 2016 12:45 pm**

I found a note:

XXa0a00a0007

XXa0a00a0007

Posted: **Mon Aug 01, 2016 8:37 pm**

have one UEababbbbbbb in unc, it was to consecutive notes!

Posted: **Mon Aug 22, 2016 8:02 pm**

Today I found:

XAabaaaacaaa

XAabaaaacaaa

Posted: **Wed Sep 07, 2016 8:59 am**

T/TA aaabbbbbac

Galway

Galway

Posted: **Fri Oct 28, 2016 10:59 pm**

Seen on ebay

5€ VA abababacab

10€ XA aabaaabaab

5€ VA abababacab

10€ XA aabaaabaab

Posted: **Wed Nov 02, 2016 10:49 pm**

Today at work I got a

ZB abbbbaaaab

ZB abbbbaaaab

Posted: **Mon Nov 07, 2016 10:35 am**

T/TC aaaabbbbaa

Posted: **Tue Nov 08, 2016 7:54 am**

P/PA aaaaabaaca

Posted: **Tue Jan 03, 2017 5:03 pm**

zbAABBCCDDEE

Posted: **Wed Apr 19, 2017 5:09 pm**

Today, I got a 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

... 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

Posted: **Fri Jun 02, 2017 1:31 pm**

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 (Europa series), what is the impossible digital root?

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 (Europa series), what is the impossible digital root?

Posted: **Sat Jun 03, 2017 6:26 am**

1). 8lmviterbo 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 (Europa series), what is the impossible digital root?

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

Posted: **Sat Jun 03, 2017 11:58 pm**

1) Yes. The serial letter would have to be either I or R in that case.Dioniz wrote:1). 8

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

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.

Posted: **Thu Jun 22, 2017 6:53 pm**

I received earlier this week also this kind of number:scrtr wrote:Today at work I got a

ZB abbbbaaaab

ZBABAAAAABAA

Posted: **Thu Jun 22, 2017 9:02 pm**

Me this days :ZB ababaabaab