All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Logic > Liars and Knights
Soldiers and Sailors (Posted on 2003-09-01) Difficulty: 3 of 5
At a family reunion, I met four distant cousing who are all in the US military. They each came in their dress uniforms, two from the Army, and two from the Navy. When I asked them their names, and where they were stationed, Terry and Tracy told the truth, but Lee and Loren lied. This was especially confusing because all four names could belong to either a man or a woman. Here is what they each said:

Male soldier:

  1. The male sailor is Terry.
  2. Tracy isn't stationed in Afghanistan.
Female soldier:
  1. The female sailor isn't Terry.
  2. Loren isn't the person stationed in Texas.
Male sailor:
  1. The male soldier is Lee.
  2. The female sailor is Loren.
Female sailor:
  1. A sailor is stationed in Hawaii.
  2. Tracy is stationed in Afghanistan.
Help me figure out who is who, and where they are all stationed (one is in Kuwait).

See The Solution Submitted by DJ    
Rating: 3.8889 (9 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution Puzzle Solution Comment 7 of 7 |
(In reply to Answer by K Sengupta)

At the outset, we observe that the male soldierís (ms) second statement directly contradicts female sailorís (fl) second statement. Also, the male soldierís first statement directly contradicts female soldierís (fs) first statement.

Thus, the possibilities are:
(ms, fl, fs) = (t, l, l), or: (l, t, t). If  the former choice is true, then by msís first statement it follows that the male sailor (ml) is Terry, so that Tracy is the male soldier. Then the first statement of ml (Terry) is false. Thus, (ms, fl, fs) =  (l, t, t).

Thus both the female combatants are speaking the truth. Since by fsís first statement, the female sailor (fl) isn't Terry, she must be Tracy. Hence, Terry must be the fs.  By flís second statement, it follows that Tracy is stationed in Afghanistan.

Since both the male combatants are liars, their names are: Lee and Loren. By msís first falsely stated statement it follows that the ms is Loren, so that: ml must be Lee.

Now, by fsís second statement, Loren is not stationed in Texas. He cannot be stationed in Afghanistan, as Tracy is already stationed there. So, Loren must be stationed either in Hawaii, or Kuwait. By flís first statement, a sailor is stationed in Hawaii. Since Loren is not a sailor, and since the fl (Tracy) is already stationed in Afghanistan, it follows that the ml(Lee) must be stationed in Hawaii, and accordingly Loren must be stationed in Kuwait. The remaining station, that is Texas must then be assumed by the fs (Terry).


  Posted by K Sengupta on 2009-02-01 13:51:52
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information