4

This puzzle is taken from a French bestseller I read years ago. The solution is much simpler than it looks...

Find the following line in this sequence :

1 1 1 2 1 1 2 1 1 1 1 1 2 2 1 3 1 2 2 1 1

McMagister
  • 7,763
  • 2
  • 32
  • 58
Keysharpener
  • 459
  • 2
  • 6
  • An old question, but here's a variant: what starting sequence can go the most steps before reaching a length of ten? – supercat Nov 07 '14 at 14:23

1 Answers1

4

Say it out loud, and count the numbers!

So the steps would be:

One 1; two 1's; one 2 one 1; and so one. The next would be 1 3 1 1 2 2 2 1.

Mathias711
  • 1,787
  • 1
  • 14
  • 28