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# police investigative officer tells his colleague: - i have

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Manager
Joined: 09 Jun 2003
Posts: 188
Location: work chair
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police investigative officer tells his colleague: - i have [#permalink]  16 Aug 2003, 05:09
police investigative officer tells his colleague:
- i have three information from my agents regarding one murder, but can not solve it. my first agent says that if fred was drunk, then either mike is murderer or frenk lies. second agent says either mike is murderer or fred was not drunk and murder happened after midnight. third says that if murder happened after midnight then either mike is murderer or fred lies.
- i know who the murderer is, answered his colleague...

but i don't
GMAT Instructor
Joined: 07 Jul 2003
Posts: 770
Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE
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Re: another logical proposition [#permalink]  16 Aug 2003, 06:11
surat wrote:
police investigative officer tells his colleague:
- i have three information from my agents regarding one murder, but can not solve it. my first agent says that if fred was drunk, then either mike is murderer or frenk lies. second agent says either mike is murderer or fred was not drunk and murder happened after midnight. third says that if murder happened after midnight then either mike is murderer or fred lies.
- i know who the murderer is, answered his colleague...

but i don't

couple questions:

if "frenk" a different guy than "fred"?

Does the second agent mean:

"Either (Mike is muderer OR fred was not drunk) AND murder happened after midnight".

or does he say:

"Either (mike is murderer) OR (fred was not drunk AND murder happened after midnight).

Both imply different things....
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

Manager
Joined: 09 Jun 2003
Posts: 188
Location: work chair
Followers: 2

Kudos [?]: 10 [0], given: 0

Re: another logical proposition [#permalink]  16 Aug 2003, 06:33
AkamaiBrah wrote:
couple questions:
if "frenk" a different guy than "fred"?
Does the second agent mean:
"Either (Mike is muderer OR fred was not drunk) AND murder happened after midnight".
or does he say:
"Either (mike is murderer) OR (fred was not drunk AND murder happened after midnight).
Both imply different things....

1. definitely, 'frenk' means 'fred'.. misprint..
2. quiz did not mention any brackets but tone of quiz sounded like either (mike is murderer or fred was not drunk) and murder happened after midnight.

i guess (just guess) murderer is mike...
Director
Joined: 03 Jul 2003
Posts: 655
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My answer: Mike is the murderer.

Got confused while drawing the venn diagram.
How to represent AND condition in the following statement.
"Either (mike is murderer) OR NOT (Fred drunk) AND (murder happened after mid night)"

Could the experts help us out!
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