Author Topic: Anyone for Logic?  (Read 7197 times)

Offline Tarquin Thunderthighs lll

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Re: Anyone for Logic?
« Reply #15 on: July 24, 2010, 12:45:16 AM »
I was going to say Julius, because it was a boy, but he's probably called Mary.
I apologise, in advance.

Offline Diane CBPFC

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Re: Anyone for Logic?
« Reply #16 on: July 24, 2010, 01:20:54 AM »
...or Sue?
People will come from strange lands to hear me speak my words of wisdom. They will ask me the secret of life and I will tell them. Then maybe I'll finish off with a song. The Nomad

Offline Diane CBPFC

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Re: Anyone for Logic?
« Reply #17 on: July 24, 2010, 01:23:03 AM »
How about this one, then?

Two boys wish to cross a river.
The only way to get to the other side is by boat, but that boat can only take one boy at a time.
The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How do they cross the river?

pee in it? that would sure make the river cross.
People will come from strange lands to hear me speak my words of wisdom. They will ask me the secret of life and I will tell them. Then maybe I'll finish off with a song. The Nomad

Vulture

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Re: Anyone for Logic?
« Reply #18 on: July 24, 2010, 03:43:07 AM »
The fourth child is Mary, as it's Mary's mum that has four children.


There are two boats.

Joan

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Re: Anyone for Logic?
« Reply #19 on: July 24, 2010, 03:47:55 AM »
How about this one, then?

Two boys wish to cross a river.
The only way to get to the other side is by boat, but that boat can only take one boy at a time.
The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How do they cross the river?

pee in it? that would sure make the river cross.

 ;D  ;D  ;D

Offline Bilthehut

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Re: Anyone for Logic?
« Reply #20 on: July 24, 2010, 08:45:52 AM »
How about this one, then?

Two boys wish to cross a river.
The only way to get to the other side is by boat, but that boat can only take one boy at a time.
The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How do they cross the river?

"that boat", "the boat" = singular, or one.  There is only one boat, Vulture.

Malc

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Re: Anyone for Logic?
« Reply #21 on: July 24, 2010, 09:40:30 AM »
One boy is already on the other side.  ;D

Offline Tarquin Thunderthighs lll

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Re: Anyone for Logic?
« Reply #22 on: July 24, 2010, 02:40:33 PM »
One boy is already on the other side.  ;D

Genius! Now what kind of hat was he wearing?
I apologise, in advance.

Vulture

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Re: Anyone for Logic?
« Reply #23 on: July 24, 2010, 02:51:47 PM »
One boy is already on the other side.  ;D

Genius! Now what kind of hat was he wearing?

A sailor's hat? Or a boater?

Offline Bilthehut

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Re: Anyone for Logic?
« Reply #24 on: July 24, 2010, 04:06:26 PM »
One boy is already on the other side.  ;D
Correct.  They are on opposite sides of the river.  One crosses over using the boat, then the other takes the boat back to the opposite side. 
The logic question requires us to:
  a.  Read the question carefully, and
  b.  Not make assumptions that are not explicit in the question. 
       (the assumption being that the boys are on the same side of the river)

Offline Bilthehut

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Re: Anyone for Logic?
« Reply #25 on: July 24, 2010, 04:09:41 PM »
Burning rope

There are two lengths of rope.
Each one can burn in exactly one hour.
They are not necessarily of the same length or width as each other.
They also are not of uniform width (may be wider in middle than on the end), thus burning half of the rope is not necessarily 1/2 hour.

By burning the ropes, how do you measure exactly 45 minutes worth of time?

Offline Diane CBPFC

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Re: Anyone for Logic?
« Reply #26 on: July 24, 2010, 04:25:34 PM »
You burn the ropes at the wooden door of a jewler's shop. The door burns down and you nick a wristwatch.
Finally - one right for me!
People will come from strange lands to hear me speak my words of wisdom. They will ask me the secret of life and I will tell them. Then maybe I'll finish off with a song. The Nomad

Offline The Peepmaster

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Re: Anyone for Logic?
« Reply #27 on: July 24, 2010, 05:05:45 PM »
Burning rope

There are two lengths of rope.
Each one can burn in exactly one hour.
They are not necessarily of the same length or width as each other.
They also are not of uniform width (may be wider in middle than on the end), thus burning half of the rope is not necessarily 1/2 hour.

By burning the ropes, how do you measure exactly 45 minutes worth of time?

You just use one rope. (Put the other in the dustbin.)
Then you light the other rope.
After quarter of an hour, you put the fire out.
The remainder of the rope that's left, when re-lit, will only burn for 45 minutes, so when it expires, you'll know 45 minutes has passed.
Nostalgia is not what it used to be. 😟

Offline The Peepmaster

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Re: Anyone for Logic?
« Reply #28 on: July 24, 2010, 05:09:47 PM »
Mary's mum has four children.
The first child is called April.
The second May.
The third June.
What is the name of the fourth child?

Herbert?
Nostalgia is not what it used to be. 😟

Offline Bilthehut

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Re: Anyone for Logic?
« Reply #29 on: July 24, 2010, 05:13:38 PM »
You burn the ropes at the wooden door of a jewler's shop. The door burns down and you nick a wristwatch.
Finally - one right for me!

Good idea - lateral thinking - but wrong.
By burning the ropes, how do you measure exactly 45 minutes worth of time?

You just use one rope. (Put the other in the dustbin.)
Then you light the other rope.
After quarter of an hour, you put the fire out.
The remainder of the rope that's left, when re-lit, will only burn for 45 minutes, so when it expires, you'll know 45 minutes has passed.
[/quote]

Wrong.  You have no means of measuring time other than to burn the rope.  You do have a lighter to light the rope though.