What's new
By:
Filters
Christian Forums

This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Math game...

Your exact address is "over there". As soon as I figure out how to build a TARDIS, I may be able to teleport to your space time coordinates.
 
Here's a variation on the lamb, wolf and bale of hay puzzle...

Four men have to cross a river in a small boat, that only takes 100 kg. (Now you know that "Over there" uses the Metric system.) Bob weighs 90 kg, charlie weighs 80 kg, Dave weighs 60 kg and Eddie weighs 40 kg. They also have 20 kg of supplies they need to take with them. how do they do it without sinking the boat. There are no tricks allowed, such as swimming across. They all go across in the boat and take their supplies as well.

The TOG​
 
40 takes the 20 supplies with him. They tie a rope to the boat before he crosses, and pull the boat back once 40 reaches the other side. Then the others take turns crossing.

To save trips, 60 and 40 could go together, and 80 could take the supplies.
 
Michael74 said:
40 takes the 20 supplies with him. They tie a rope to the boat before he crosses, and pull the boat back once 40 reaches the other side. Then the others take turns crossing.

To save trips, 60 and 40 could go together, and 80 could take the supplies.
Click to expand...

I said no tricks. Using a rope to pull the boat back counts as a trick. Someone has to row it.

The TOG​
 
The 40 guy ferries the 60 guy across, then the supplies. Then he rows the boat back, and the 80 guy goes across alone. The 60 guy rows it back, and ferries the 40 guy back across. The 40 guy rows it back, and the 90 guy goes across alone. The 60 guy then rows back and ferries the 40 guy across.

Alternatively, they could paint anti-gravity paint on the bottom of the boat.
 
Can they all fast for 40 days first ? :D

I'm going with Michael again.
 
40 + 60 = 100 ----> They go over first.
(60 is on the other side)​
40 rows back. 90 goes over and 60 comes back.
(90 is on the other side)​
40 + 60 = 100 ----> They go over again.
(90 and 60 are on the other side)​
40 rows back. 80 takes the 20 kg of supplies over
(90 and 60 and 80 and 20 are on the other side now)​
60 rows back to fetch 40.
 
Sparrowhawke said:
40 + 60 = 100 ----> They go over first.
(60 is on the other side)​
40 rows back. 90 goes over and 60 comes back.
(90 is on the other side)​
40 + 60 = 100 ----> They go over again.
(90 and 60 are on the other side)​
40 rows back. 80 takes the 20 kg of supplies over
(90 and 60 and 80 and 20 are on the other side now)​
60 rows back to fetch 40.
Click to expand...

That's it :)

That took me quite a while to figure out. I had to resort to writing names and weights on pieces of paper and moving them around, since I couldn't keep track of who was where in my head.

The TOG​
 
Michael74 said:
The 40 guy ferries the 60 guy across, then the supplies. Then he rows the boat back, and the 80 guy goes across alone. The 60 guy rows it back, and ferries the 40 guy back across. The 40 guy rows it back, and the 90 guy goes across alone. The 60 guy then rows back and ferries the 40 guy across.
Click to expand...

This works too.
 
Sparrowhawke said:
This works too.
Click to expand...

Oops... I didn't see that one. he forgot the supplies. I suppose they could have gone over with the 80 kg guy. There are probably a number of ways of solving it. You both get a prize - a hot fudge sundea, which you get the privalege of making yourself.

The TOG​
 
Next puzzle...

You work in a fruit factory. In front of you are 3 crates of fruit. One of them contains apples, one of them contains oranges and one contains apples and oranges. The crates are labled "APPLES", "ORANGES" and "APPLES AND ORANGES", but there's something wrong with the labelling machine and all of the crates are labeled incorrectly. You can't see what's in the crates, but you are able to reach into only one crate and pull out only one piece of fruit. Once you see what it is, you are able to label all the crates correctly. How?

The TOG​
 
Pick from the box that is incorrectly labeled as "Apples AND Oranges". We know it is not labeled correctly.
The rest can be deduced but I'm on my way to school at the moment and can't fix my thought sufficiently to type it out.

Somebody else can do it? (Please)
 
Right, fruit from the AO box labeled box can be safely re-labeled A if an apple comes out.

The box labeled O can then be re-labeled AO.

The remaining box is O.
 
Michael74 said:
Right, fruit from the AO box labeled box can be safely re-labeled A if an apple comes out.

The box labeled O can then be re-labeled AO.

The remaining box is O.
Click to expand...

That's correct. These seem to have been way too easy. Let's try a harder one...

There are thee men. One of them always tells the truth, one always lies and the third sometimes lies and sometimes tells the truth. You do not know who is who. You may ask exactly 3 yes or no questions. Each question must be directed at only one of the men . You may ask the same man more than one question. After asking 3 questions, you should be able to know who is who.

There's one more catch. The men all understand English, but they will answer in their own language, in which yes and no are "da" and "ja". You don't know which means yes and which means no.

Good luck

The TOG​
 
TOG said:
That's correct. These seem to have been way too easy. Let's try a harder one...

There are thee men. One of them always tells the truth, one always lies and the third sometimes lies and sometimes tells the truth. You do not know who is who. You may ask exactly 3 yes or no questions. Each question must be directed at only one of the men . You may ask the same man more than one question. After asking 3 questions, you should be able to know who is who.

There's one more catch. The men all understand English, but they will answer in their own language, in which yes and no are "da" and "ja". You don't know which means yes and which means no.

Good luck

The TOG​
Click to expand...

Oh man I get home from work and walk into this doozy. My brain hurts.
 
TOG said:
There are thee men. One of them always tells the truth, one always lies and the third sometimes lies and sometimes tells the truth. You do not know who is who. You may ask exactly 3 yes or no questions. Each question must be directed at only one of the men . You may ask the same man more than one question. After asking 3 questions, you should be able to know who is who.

There's one more catch. The men all understand English, but they will answer in their own language, in which yes and no are "da" and "ja". You don't know which means yes and which means no.

Good luck

The TOG​
Click to expand...

agua. said:
Oh man I get home from work and walk into this doozy. My brain hurts.
Click to expand...


I should maybe tell you one thing about it. I saw this on a website yesterday that claimed that this was the most difficult logic puzzle in the world. Maybe we should forget the part about them speaking a different language and just use some commonly understood language, like Latin or Hebrew, for example. Or just whatever language you want. If they answer in a language I understand (which I just realized is about 12 languages if all I have to understand is yes and no), then I can do it with 4 questions pretty easilly. I haven't figured it out with 3 questions yet.

The TOG​
 
You must log in or register to reply here.
Back
Top