Post your puzzles/brain-teasers here

[leggo PE]

Yes, that is exactly how it works.

Woohoo @vhab49_PE, you see that?? K, back to the drawing board.

 

[aog]

I think there's more than one answer

 

[DoctorWho-PE]

F

 

[Audi Driver P.E.]

I think there's more than one answer

Only one answer does not work.

 

[Audi Driver P.E.]

F

Sorry incorrect.

 

[aog]

you may have to rotate some of the various top views proffered to see if they work.

I missed this before...now I agree that E can be a correct solution.  I say that G cannot work because the center block of the top view would need to be clear to be correct.

 

[Audi Driver P.E.]

I missed this before...now I agree that E can be a correct solution.  I say that G cannot work because the center block of the top view would need to be clear to be correct.

View attachment 12683

Winner winner chicken dinner!  How to know that the center block must be clear?   Front view would require that the black block be in row 1 and/or 3 and not in 2, 4, or 5. Side view requires that it be in row 2 and/or 4 and not in row 1, 3, or 5. These things are incompatible. (note: no rotation of the top view required to ascertain this)

 

[JHW 3d]

Just seeing this now. I was scrolling down thinking I hope no other ******* guesses G so I can be King *******.

Damnit.

G all day long people.

(Ok there you go, I’m the *******)

 

[Audi Driver P.E.]

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

 

[BabaYaga]

what about changing the wiring, or does the room has window?  :eyebrows:

 

[Audi Driver P.E.]

what about changing the wiring, or does the room has window?  :eyebrows:

No and no.

 

[Orchid PE]

Do we have all the information we need to answer the question?

 

[Booo]

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

The answer in my opinion. 

Spoiler

Turn off all he switches (if not already). Wait for a while to let all the bulbs cool down. Turn on one switch (lets say A). Wait 10 minutes. Switch A off. Turn on another on (say B). Open the door. The lit up bulb is controlled by B. The warm one is controlled by A and the remaining one is controlled by remaining switch (or C)

 

[Orchid PE]

Dang it. I think that's right. Now I know I've heard this one before. But I dumb and forgot.

 

[Audi Driver P.E.]

The answer in my opinion. 

Spoiler

Turn off all he switches (if not already). Wait for a while to let all the bulbs cool down. Turn on one switch (lets say A). Wait 10 minutes. Switch A off. Turn on another on (say B). Open the door. The lit up bulb is controlled by B. The warm one is controlled by A and the remaining one is controlled by remaining switch (or C)

Basically correct.

 

[Orchid PE]

This is an oldie, so I'm sure most people know it:

You are in a room with two guards, each guarding a door. One of the doors leads to Heaven and the other to Hell, but you don't know which one leads where. You have to choose and open one of these doors, but you can only ask a single question to one of the guards. One of the guards always tells the truth and the other always lies, but you don't know which one is lying or telling the truth.

What do you ask to find out which door leads to Heaven?

 

[Audi Driver P.E.]

This is an oldie, so I'm sure most people know it:

You are in a room with two guards, each guarding a door. One of the doors leads to Heaven and the other to Hell, but you don't know which one leads where. You have to choose and open one of these doors, but you can only ask a single question to one of the guards. One of the guards always tells the truth and the other always lies, but you don't know which one is lying or telling the truth.

What do you ask to find out which door leads to Heaven?

You ask one what the other one would say to do and then do the opposite.

 

[Orchid PE]

You ask one what the other one would say to do and then do the opposite.

Maybe? Do you have the exact question you would ask?

 

[Booo]

Maybe? Do you have the exact question you would ask?

Maybe something like. "If I asked the other guard which door will lead to heaven, what would they say?"

 

[Orchid PE]

Maybe something like. "If I asked the other guard which door will lead to heaven, what would he say?"

This would work, because with this question asking either guard would point you to the hell door.