- There are 5 hats in the room:
   - 3 of them are black and
   - 2 of them are white

- 3 persons are led into this room:
   - 2 with their eyes covered and
   - 1 blind

- 3 hats are placed on their heads
  and remaining 2 hats are removed
  from the room.

- The cover is removed from the eyes
  of the 1-st person and he is asked to
  guess what is the color of his hat.

- He replies that he can't guess.

- The cover is removed from the eyes
  of the 2-nd person and he is asked to
  guess what is the color of his hat.

- He replies that he can't guess.

- Is there any way for the blind per-
  son to guess what is the color of
  his hat?






- There are only 3 ways of dis
   - 3 black hats are put on persons
     and 2 white hats are removed from





- 3 black hats...
  +-------+-------+
  | 1-st  | Black |
  +-------+-------+
  | 2-nd  | Black |
  +-------+-------+
  | Blind | Black |
  +-------+-------+

  +-------+-------+-------+-------+
  | 1-st  | Black | Black | White |
  +-------+-------+-------+-------+
  | 2-nd  | Black | White | Black |
  +-------+-------+-------+-------+
  | Blind | White | Black | Black |
  +-------+-------+-------+-------+

  +-------+-------+-------+-------+
  | 1-st  | White | White | Black |
  +-------+-------+-------+-------+
  | 2-nd  | White | Black | White |
  +-------+-------+-------+-------+
  | Blind | Black | White | White |
  +-------+-------+-------+-------+

          +---+---+---+---+---+---+---+
          | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
  +-------+---+---+---+---+---+---+---+
  | 1-st  | B | B | B | W | B | W | B |
  +-------+---+---+---+---+---+---+---+
  | 2-nd  | B | B | W | B | B | B | W |
  +-------+---+---+---+---+---+---+---+
  | Blind | B | W | B | B | W | W | W |
  +-------+---+---+---+---+---+---+---+