Logical Brain Teasing Questions

[Quantrax]

Hello this is Phoenix and I would like to test all your logical senses. If you have some of your own please pm me or perhaps add here once a correct answer has been found. I will attempt to update at minimum daily with the answer and check in periodically to see if a right answer has been found already. Not sure as to reward yet but would like to see the popularity first as I found them rather intriguing.


First Post Question:

There are 3 light switches in one room and 3 lights in another room. (2 rooms 3 switches 3 lights)
There is no way to see the lights from the light switches and you cannot enter the room and come back and forth to check the switches however the objective is to find which light switch goes to which light once you enter the light room.

Which light switch goes to which light. feel free to label 1 2 3 respectively but they do not match like switch 1 is light 1 but possible.
How do you find out which light switch goes to which light.

Good luck and please let me know what you think of these as I will add more as these are answered correctly

[BlaZe]

Took me a bit, but I think I've figured it out.

Turn on Switch 1 for a minute or two, then turn it off - turn on Switch 2 and then go into the Light Room. Switch 2 goes to the light that is turned on (obviously), Switch 1 is the light that is off but warm to the touch, while 3 is the remaining light that is off (and cool).


Do I get a cookie?

[Quantrax]

Haha yes i will get you a cookie Blaze congratulations

Next is easy one for everyone


If it takes 4 men 4 hours to dig 4 holes,
How long does it take 1 man to dig a half a hole?

[Calan Caitin]

Mathmatically the obvious answer would be 30 minutes, but I'm of the sort that think you either have hole or you don't. Not sure how you can half a hole unless you give certain requirements for it to be a hole.

[BlaZe]

It takes four men one hour to dig one hole, so each man would be taking one hour for 1/4 of the hole.

My answer would be two hours, but as Calan said - a hole is a hole. Unless actual dimensions are given for the holes (or we were asked how long it would take one man to dig a hole half the size as the previous four, and assuming the holes are the same sizes), then its a trick question.

[Adin]

2 hours is correct if the ground is completely made out of the same stuff all the way through and considering there is a fixed depth.

[Calan Caitin]

2 hours? It doesn't say all 4 men were digging on the same hole. 4 men, 4 holes, 4 hours. Very well could be 1 man per hole that took him 1 hour to dig. Digging half of what he dug before would take half the time. But after the spade is pushed into the ground; you have a hole. It's a smaller one than what you could dig in 1 hour, but still a complete hole.

[BlaZe]

Very well could be 1 man per hole that took him 1 hour to dig.

If each man were digging his own, it would be four hours per hole - half the time would still be two hours. I'd have a hard time believing Man #1 would dig a hole for an hour and stop, then Man #2 digs his hole for an hour and stops, etc.

[Adin]

Just rephrase the question:

If four man do THE WORK(TM) in four hours, how long would it take for one of those man to do half the amount of THE WORK(TM) he did before ?

Or better:

If four man produce four apples in one hour, how long would it take for one of them to make half an apple ?

The answer is always the same: 1/2 of the time.

The question to your answer would be:

How much time would 8 man need to dig one hole ? (I think )

[Calan Caitin]

However you want to look at it, I still say you can't have half a hole unless there are requirements given for it to be considered a hole. Otherwise you have a hole as soon as the spade enters the ground, so 2 hours is still the wrong answer.

[Adin]

Yes but then there would be no right answer. Could take me anywhere from half a second to several years to dig a "hole".

[Quantrax]

Haha You are correct Calan as you cannot dig half a hole and therefore the answer is that you cannot dig half a hole as when you put your shovel in once you still have a hole no matter how big or small it is it is just a hole not a half a hole. There are half sized holes but not half a hole Congrats Calan..

Are we all enjoying these little mind testers? I have many to go around haha Good ways to bide the time at work when i get bored lol

Next:

What gets wetter as it drys?

[Zerrex]

A towel. >.>

[Quantrax]

A towel is correct congratulations Zerrex.

Next addition:

What has many holes but can still hold water?

[Zerrex]

I was thinking a pot... because you know.. I'm a pot-hole? But now that I think it over, I'm pretty sure I'm wrong.

For all who've seen the commercial: Oh no~! Your tire's all flat 'n' junk.