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        riddles >> medium >> Complete/Find_the_significance of the sequence
        
(Message started by: mattian on Aug 5^th, 2004, 6:41am)

Title: Complete/Find_the_significance of the sequence
Post by mattian on Aug 5^th, 2004, 6:41am

1, 2, 3, 2, 1, 2, 3, 4, ...

What are the next two elements in the sequence?

Title: Re: Complete/Find_the_significance of the sequence
Post by evergreena3 on Aug 5^th, 2004, 6:46am

I'm going to complete the sequence in the following way:
::[hide] 1, 2, 3, 6...[/hide]::

That works because ::[hide] it has 1, 2, 3, followed by a number growing by 2 every time (2, 4, 6, etc.)[/hide]::

[hide] the problem with a sequence like this is there are many, many answers which COULD fit, but only one which the author is seeking.[/hide]

Title: Re: Complete/Find_the_significance of the sequence
Post by mattian on Aug 5^th, 2004, 6:53am

This is true - but let me throw a spanner in the works and give you more elements.

1, 2, 3, 2, 1, 2, 3, 4, 2, 1, 2, 3, 4, 3, ...

Now find the next two.

Title: Re: Complete/Find_the_significance of the sequence
Post by NickMcG on Aug 9^th, 2004, 9:03pm

"1, 2, 3, 2, 1, 2, 3, 4, 2, 1, 2, 3, 4, 3, ...

Now find the next two."

Next two are 2,3.

Is this an old Roman puzzle?

Title: Re: Complete/Find_the_significance of the sequence
Post by mattian on Aug 10^th, 2004, 6:46am

Nice. Well done.