Friday, January 6, 2012

A Logical Question

1.
criminals are caught and are to be punished. The Judge allows them to be
freed if they can solve a puzzle. If they do not, they will be hung.
They agreed. The 4 criminals are lined up on some steps (shown in
picture). They are all facing in the same direction. A wall seperates
the fourth man from the other three.
To Summarise
Man 1 can see men 2 and 3.
Man 2 can see man 3.
Man 3 can see none of the others.
Man 4 can see none of the others.
The criminals are wearing hats. They are told that there are two
white hats and two black hats. The men initially don't know what colour
hat they are wearing. They are told to shout out the colour of the hat
that they are wearing as soon as they know for certain what colour it
is.
They are not allowed to turn round or move.
 They are not allowed to talk to each other.
 They are not allowed to take their hats off.
Now the aptitude question is "Who is the first person to shout out and why?"



2.
There are three guys standing on a row. A man with a bag having 2 White and 3 Black hats. He place the hats on the each person standing on the row. Now he stands in front of them and ask which of you know your hat colour?

2 comments:

sunil maharjan said...

al of those people will short it out during reading ur post,and all 4 persons too caz they r already told that 2 white hats and 2 black hats r there

rajan said...

ANS: Man 1 will shout first. If Man1 will not shout then Man 2 surely shouts.
Reason:
Man 1 can see the other two criminals? hats. If the hats are same color then he told
his hat is opposite color of remaining two hats. So he shouts first. If
Man 1 does not shout, it means that the hats of Man 2 and Man 3 are of
different color. So Man 2 sees the color of Man 3 hat and he tells that
the color of his hat is opposite to the color of Man 3 Hat.