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

Home > Logic
An easy whodunit (Posted on 2017-03-08) Difficulty: 2 of 5
Mr. Smith was murdered in Kansas City. The police determined that the time of death was between 11:10 pm and 11:30 pm. Four suspects were questioned: Butler, the butler; Cook, the cook; Ruby, the maid; and Irma, Mr. Smith’s secretary.

The suspects made the following statements:
Butler: I did not do it. Irma did it. Mr. Smith was blackmailing Irma. Ruby and I were watching television together from 10:10 p.m. until 12:30 a.m.
Cook: I am innocent. Irma was being blackmailed. Butler murdered Mr. Smith. I saw Irma leave the house at 10:00 p.m.
Ruby: I am innocent. Butler and I were watching television together at the time of the murder. Irma was being blackmailed. I saw Irma speaking to Mr. Smith at 9:30 p.m. on the night of the murder.
Irma: I did not kill Mr. Smith. I was not being blackmailed. I was in St. Louis during the entire night of the murder. Ruby is the murderess.

If each suspect made exactly two true statements and told exactly two lies, determine who killed Mr. Smith.

  Submitted by Ady TZIDON    
Rating: 3.5000 (2 votes)
Solution: (Hide)
Ruby was the murderer.
See for yourself how well ir fits.
Reading all posts is highly recommanded

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: Improved proof (no subject)ollie2017-03-25 10:53:31
re(2): No Subjectollie2017-03-21 06:34:35
Hints/Tipsre: No SubjectAdy TZIDON2017-03-21 05:30:44
SolutionNo Subjectollie2017-03-20 10:33:23
Hints/Tipsre: Adding one conditionAdy TZIDON2017-03-13 20:24:23
Hints/Tipsre: Conditional SolutionAdy TZIDON2017-03-13 20:17:38
SolutionConditional Solutionhoodat2017-03-11 23:27:04
Adding one conditionollie2017-03-08 15:32:37
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 (2)
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