[AccessD] OT: Friday entertainment

Hi Shamil

This one is fine! It demonstrates that not everything is what it looks like.
Without the fresh clue on non-10-based numbers it could have tortured me for much longer time.

/gustav

>>> shamil at users.mns.ru 24-09-2005 20:43:00 >>>
Yes, Gustav, it's 5-based sequence.
Yes, number that fits is 24 (5)

10 11  12  13    14   ||  20  22  (24)   31

10+11 = 21-1 = 20
11+12 = 23-1 = 22
12+13 = 30-1 = 24 <==
13+14 = 32-1 = 31

and so on ...

Of course your task was much more interesting...

Have nice weekend,
Shamil

----- Original Message ----- 
From: "Gustav Brock" <Gustav at cactus.dk>
To: <accessd at databaseadvisors.com>
Sent: Saturday, September 24, 2005 2:58 PM
Subject: Re: [AccessD] OT: Friday entertainment


> Hi Shamil
>
> Could it be a 5-based sequence?
>
> (10)5 (11)5 (12)5 (13)5 (14)5 (20)5 (22)5 (?)5 (31)5 equals in 10-base:
>
> 5 6 7 8 9 10 12 (?) 16
>
> Then number that fits in here is 14, thus the missing item in 5-base is 24.
>
> /gustav
>
> >>> shamil at users.mns.ru 23-09-2005 15:27 >>>
> P.S. My Friday puzzle to you Gustav :)
>
> What is the missing number:
>
> 10 11 12 13 14  20  22  (?) 31