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Very Easy Logic Problems
Where must dracula be

 
Wed Jan 23, 2013 6:11 pm  by Logic_Newbie

There is one and only one Dracula
This Dracula is locked in three and only three caskets
One is solid red, one is solid yellow, one is solid blue
The caskets have inscriptions
Red says, Dracula is here (meaning inside the casket)
Yellow says, Dracula is not here (not inside the casket)
Blue says, Dracula is not in the red casket
At most one inscription is true

Where must Dracula be
 
   
Sat Jan 26, 2013 9:31 pm  by MathMad

Yellow.

If at most one inscription is true, then either:
1. There are no TRUE statements
2. There is exactly one TRUE statement.

Inscription on the red and blue cannot be both true or both false, since one is negation of the other. ==> There is exactly one TRUE statement.

So either the inscription on the Red or Blue is true ==> Inscription on the Yellow one is false.

==> The dracula must be in Yellow.

Inscription on Red is FALSE;
Inscription on Yellow is FALSE
Inscription on Blue is TRUE
 
   
Wed May 29, 2013 8:08 pm  by AMD

Basically, Dracula can only be in the blue one.
 
   
Tue Nov 26, 2013 12:34 pm  by Shipra

If we consider each statement true one by one, then only possible case with the given condition that is valid will be the one when the third incription is true.... Thus, the dracula is in the Yellow casket
 
   
Thu Dec 12, 2013 8:47 pm  by Shavil Maharaj

yellow
 
   
Sun Dec 29, 2013 4:27 am  by lauramay

RED
 
   
Mon Jun 08, 2015 1:17 pm  by merlewood

The Count is in the Yellow casket
 
   
Tue Nov 24, 2015 4:05 pm  by forourke

He is in the Red casket which is inside the yellow casket which is in the blue casket.
 
   
Thu May 31, 2018 5:44 pm  by bedead

Yellow
 
   
Sun Jan 13, 2019 8:47 pm  by richardhicks

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