Why are these numbers arranged in this fashion? This is a finite sequence, and these are all the numbers in the sequence. No fair googling!

8, 5, 4, 9, 1, 7, 6, 10, 3, 2.

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- July 28th 2010, 06:00 AMAckbeetExplain the Order of this Finite Sequence
Why are these numbers arranged in this fashion? This is a finite sequence, and these are all the numbers in the sequence. No fair googling!

8, 5, 4, 9, 1, 7, 6, 10, 3, 2. - July 28th 2010, 07:02 AMFailure
Instead of just googling you might want to ask The On-Line Encyclopedia of Integer Sequences™ (OEIS™)

- July 28th 2010, 07:31 AMAckbeetQuote:

No fair googling!

- July 28th 2010, 08:38 AMbondesan
My guess is that they are arranged by its first letter, that is, in alphabetic order. But I can't see why it is finite.

- July 28th 2010, 08:46 AMFailure
- July 28th 2010, 09:02 AMAckbeet
Tangents, in this case, are kind of the point. I think it's curious to see what kind of person gets this sequence immediately, and what kind of person doesn't. Often, the mathematical people think too hard about it.

- July 28th 2010, 11:11 AMFailure
Yes, I know, and how unfair it is! By the way, you surely know the story of John von Neumann actually solving a trick question the hard way (by summing an infinite series) but doing it so quickly that people thought he had figured how to do it the easy way.

Sad to say, I am no John von Neumann. - July 28th 2010, 01:20 PMbondesan
I edited this message because I missunderstood the chat and posted a nonsense, hehe.

There's a similar sequence that I think it only works in portuguese (my mother language), which you must tell what are the next term: 2, 10, 12, 16, 17, 18, 19, ?