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HelicopterOff Topics › A number sequence...
12-11-2004 02:23 PM  13 years agoPost 1
rchelipilot121

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Examine carefully the following sequences of numbers:
1
11
21
1211
111221
312211
13112221
1113213211
31131211131221
13211311123113112211
.......

Although the sequences appear random, they are not. Based on what you see above, what is the next number in the sequence?

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12-12-2004 09:17 AM  13 years agoPost 2
Colibri

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The next number is:
1113122113311213212221

The trick is to read the sequence out load and write down what you say. Like this:

1 You say there is one one. And you write: 11
11 You say two ones. And write 21
21 You say one two, one one. And write 1211.
etc.

Tim

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12-12-2004 03:47 PM  13 years agoPost 3
rchelipilot121

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Did you at least have fun with this one? It took me about two days before I gave up on the first number being 11 (eleven)

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12-12-2004 04:29 PM  13 years agoPost 4
Colibri

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This one of those which you either see right away or possibly never. It took me 5 minutes but it is not the first time that I saw a sequence like this so experience helped.

Tim

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