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riddles >> easy >> Guess the sequence
(Message started by: rmsgrey on Dec 17th, 2005, 4:47am)

Title: Guess the sequence
Post by rmsgrey on Dec 17th, 2005, 4:47am
1, 8, 72, 46, 521, 612, 343, 215...

What are the next few terms, and/or the rule for generating the sequence?

(it may be worth skipping the tenth term to avoid giving too much away)

Title: Re: Guess the sequence
Post by JohanC on Dec 17th, 2005, 4:54am
[hide]927[/hide] ?

Title: Re: Guess the sequence
Post by pcbouhid on Dec 18th, 2005, 2:23am
[hide]927, 0001, 1331, 8271,...[/hide]

Title: Re: Guess the sequence
Post by JocK on Dec 18th, 2005, 3:02am

on 12/17/05 at 04:47:37, rmsgrey wrote:
1, 8, 72, 46, 521, 612, 343, 215...

What are the next few terms, and/or the rule for generating the sequence?


hmmm... you should have asked to give the milionth term...  ;D




Title: Re: Guess the sequence
Post by JohanC on Dec 18th, 2005, 5:14am

on 12/18/05 at 03:02:46, JocK wrote:
hmmm... you should have asked to give the milionth term...  ;D


[hide] 1 [/hide]   ;D

Title: Re: Guess the sequence
Post by rmsgrey on Dec 18th, 2005, 9:26am

on 12/18/05 at 05:14:53, JohanC wrote:
[hide] 1 [/hide]   ;D

Not quite...

[hide]0000000000000000001[/hide]...

Title: Re: Guess the sequence
Post by Grimbal on Dec 19th, 2005, 12:42am
Are we going to start a thread whether ...0001 = 1 or not ?

Title: Re: Guess the sequence
Post by rmsgrey on Dec 19th, 2005, 2:50am
The last step in generating a term of the sequence is clearly dealing with the number as a symbol string rather than a value. As symbol strings, ...0001 and 1 are clearly different. Reinterpreting the string as a value is introducing an additional step - it's still a valid sequence, but less simple, so not as good.

Title: Re: Guess the sequence
Post by JocK on Dec 19th, 2005, 3:56am

on 12/19/05 at 02:50:40, rmsgrey wrote:
The last step in generating a term of the sequence is clearly dealing with the number as a symbol string rather than a value. As symbol strings, ...0001 and 1 are clearly different. Reinterpreting the string as a value is introducing an additional step - it's still a valid sequence, but less simple, so not as good.


In that case, completing the sequence given the terms provided (without the tenth term), is a highly ambiguous task.





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