bala2910 wrote:Hi Anurag,
I don't understand why GYR-GYR-GYR pattern cannot be allowed. It clearly tells that every yellow tile is preceded by a green tile.
No one has ever said that GYR-GYR-GYR ... pattern cannot be allowed.
This is a
possible pattern, but not the only one. There can be other patterns too. Just read my earlier posts.
That's because the problem clearly
doesn't tells what should precede each green tile. Hence, the tile before any green one may be of any of the three colors.
if 18 is G,19 is Y and 20 is R
then 21st must be green and 22nd must be yellow based on the information given. How can 22nd be Green?
There is no constraints about what comes after a green.
Yellow always preceded by green doesn't mean that green is always followed by yellow.
Hope that clears your confusion.
