Rules
Terms of Use

Topic Options
#1072001 - Mon Nov 03 2014 12:22 PM Alice 4
baldhair Offline
Explorer

Registered: Tue Aug 05 2014
Posts: 81
Loc: Gloucestershire UK
1. When our Aunt Mabel died, she left a considerable amount of money to Alice, who was her favourite niece. Alice was 18 at the time and very independent. She decided to use some of the money to travel the world. One day she found herself on a remote island which consisted mainly of a large forest in which were some strange inhabitants. The forest was called The Forest of Forgetfulness, and Alice found that there were certain things she often forgot while in the forest. One of them was the day of the week.
Two frequent visitors to the Forest were the Lion and the Unicorn. The Lion lies on Mondays, Tuesdays and Wednesdays, and tells the truth on the other days of the week; the Unicorn lies on Thursdays, Fridays and Saturdays, and tells the truth on the other days of the week.
One day, Alice came upon the Lion and the Unicorn resting under a tree. They made statements as follows:
Lion: "Yesterday was one of my lying days."
Unicorn "Yesterday was one of my lying days too."
From these statements Alice, (who had forgotten what day it was), was able to deduce the day of the week. Now then - what was it?
(Acknowledgement: Raymond Smullyan)

2. The Post Office received a letter addressed as follows:

WOOD
SUNRISE
STREET
HANTS

Fortunately, a distant relative of our Alice worked in the sorting office, and so the letter was correctly delivered. To where?

Top
#1072047 - Mon Nov 03 2014 04:06 PM Re: Alice 4
deputygary Offline
Enthusiast

Registered: Thu May 24 2007
Posts: 283
Loc: South Dakota USA
1. If it was Thursday the lion would be telling the truth about lying on Wednesday. The unicorn would be lying about lying on Wednesday. Ipso facto, ergo sum, it must be Thursday.
_________________________
"When you argue for your limitations, they become yours."--Richard Bach, Illusions

Top
#1072052 - Mon Nov 03 2014 04:09 PM Re: Alice 4
dg_dave Offline
Champion Poster

Registered: Sun Oct 05 2003
Posts: 23612
Loc: near Stafford, Virginia USA  
1. The only logical day would be Thursday, since both of them are truthful on Sundays.

Reason being: if it is Thursday, the lion would be truthful, as Wednesday is one of his lying days, and the unicorn would lie because Wednesday would be a truthful day.
_________________________
The way to get things done is NOT to mind who gets the credit for doing them. --Benjamin Jowett
No one can make you feel inferior without your consent. --Eleanor Roosevelt
The day we lose our will to fight is the day we lose our freedom.

Top
#1072088 - Mon Nov 03 2014 06:52 PM Re: Alice 4
deputygary Offline
Enthusiast

Registered: Thu May 24 2007
Posts: 283
Loc: South Dakota USA
2. the name is Dawn Underwood. Haven't worked out the address yet.
_________________________
"When you argue for your limitations, they become yours."--Richard Bach, Illusions

Top
#1072108 - Mon Nov 03 2014 09:17 PM Re: Alice 4
dg_dave Offline
Champion Poster

Registered: Sun Oct 05 2003
Posts: 23612
Loc: near Stafford, Virginia USA  
Address is Sunrise Street.
_________________________
The way to get things done is NOT to mind who gets the credit for doing them. --Benjamin Jowett
No one can make you feel inferior without your consent. --Eleanor Roosevelt
The day we lose our will to fight is the day we lose our freedom.

Top
#1072147 - Tue Nov 04 2014 05:23 AM Re: Alice 4
TabbyTom Offline
Moderator

Registered: Wed Oct 17 2001
Posts: 8448
Loc: Hastings Sussex England UK    
Does the address perhaps end with "Andover, Hants"?
_________________________
Dilige et quod vis fac

Top
#1072191 - Tue Nov 04 2014 05:04 PM Re: Alice 4
flopsymopsy Offline

Administrator

Registered: Sat May 17 2008
Posts: 4504
Loc: Northampton England UK
Tsk! Street is in Somerset, we all know that.
_________________________
The Hubble Telescope has just picked up a sound from a fraction of a second before the Big Bang. The sound was "Uh oh".

Top
#1072248 - Wed Nov 05 2014 05:13 AM Re: Alice 4
baldhair Offline
Explorer

Registered: Tue Aug 05 2014
Posts: 81
Loc: Gloucestershire UK
1. Statements:
Lion: "Yesterday was one of my lying days."
Unicorn "Yesterday was one of my lying days too."

Sun Mon Tue Wed Thu Fri Sat
Lion T L L L T T T
Unicorn T T T T L L L

The only days that the lion can say this are Mondays (lie) and Thursdays (true).
The only days that the unicorn can say it are Sundays (true) and Thursdays (lie).
So the only day that they can both say it is Thursday.

2. Dawn Underwood
Andover Street
Andover
Hampshire

Thanks to all.

I can't get the Days;T/L chart to line up properly. I hope you an work it out.
My apologies.


Edited by baldhair (Wed Nov 05 2014 05:16 AM)

Top

Moderator:  ozzz2002