Math Club – November

Math Club – November

End of Month Puzzle: Buried in the sand

If any one of them is able to tell the correct colour of his own cap, everyone will be saved.

  • All of them know that there are 2 black and 2 white caps.
  • They can see the caps of only the people in front of them.
  • There is a wall, which you can’t see through.
  • Not allowed to talk
  • Only 1 chance to speak, and only 1 person can speak.
  • Everyone is intelligent.