The teacher shows students the inside of the box. It contains three blue cups, two red
cups and nothing else. (It contains three Cubs caps, two Cardinals caps, and nothing
else: the Cubs caps are true blue (for goodness), the Cardinals ones fire red (for evil)).
There are only three students in classroom and teacher is going to blindfold each of
place one cup of five on top of the head. The remaining two cups are left in the box
and no one knows the color of the cup after the blindfold is removed. The teacher said
student cannot guess color of cup and they have to prove they have that cap on.
The teacher removes the first student’s blindfold and student now can see the color of
cups on other two student’s heads but he cannot see his cup’s color. First student look
other two student’s cups and thinks for seconds and he said he does not know his
color of hat. (The first student does not say loud about other student’s color of hats)
The teacher removes the second student’s blindfold and student now can see the color
of cups on other two student’s heads. He said he does not know his color of cap either
(the second student does not say loud about other student’s color of hats like first
Just as teacher remove third student’s blindfold, the third student says that she knows
exactly color of the cap on her head and she does not need to see other student’s color
Question – three possibilities which one is correct?
1.She cannot know what color of cap on her head
2.she has blues cap and also prove it
3.she has red cap and also prove it