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Puzzle ZFAS 



??

What number comes next in this sequence:

42  1412  11141112  31143112  132114132112  {?}

Puzzle Copyright © Kevin Stone

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Answer
11131221141113122112.

Reasoning
Each term describes the previous term.

For example 42 = one four, one two = 1412.

And 1412 = one one, one four, one one, one two = 11141112.

Etc.

 

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