Brain Teaser





Consider these strings: 1, 11, 21, 1211, 111221, 312211, ... what is the next item?

As a hint, it is called an audioactive puzzle.



The answer is 13212221.

The clue that it is audioactive gives it away.

The full sequence is the starting number, 1.

Next is a description of it: "One 1', 11.

Next is a description of THAT sequence, 'Two one's', 21.

The pattern continues. There's 'One 2, and One 1', 1211.

Thus 'One 1, One 2, and two 1s' gives 111221.

Then 'three 1's, Two 2, and One 1' translates as 3112211'.

Therefore next is 'One 3, Two 1's, Two 2's, Two Ones', 13212221."



Our winners are:

  • Darilynn Patterson - Marquette Group
  • Derek M. Smashey - Nations Media Partners
  • Chris Barry - YellowBook
  • Chris Kelly - The Kelsey Group
  • Sharon Johnson - Sensis
  • Sean McLellan - IPIX Corp.






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