Thread: Riddle Me This, SRP

Originally Posted by Jimbo

Not true Gugi! X said you are only allowed to make one trip to the other room using only the light switches. So, punch a hole in the wall, grab the light switches, rip them out through the plaster as you move to the other room, and see which one is connected to the socket.

I base my answer on observations I made on the last electrician we hired to fix a faulty socket.

James.

That is clearly a much more elegant solution that my own. I concede my turn to you, good sir.

really, if someone wants to riddle, go ahead. I've always much preferred answering riddles than posing them.

You are on an island.

On the island is a cave.

In the cave is an idol. The idol is either black, or it is white. Your life depends on knowing the correct color, but you may not enter the cave or see the idol.

There are two separate tribes on the island.

One tribe always tells the truth...

The other always lies.

You can not know which tribe is truth tellers, or which is liars.

Both tribes know the true color of the idol.

You may ask only one question, one time, to one tribe, to determine the correct color of the idol.

What is the one question that will allow you to correctly determine the true color of the idol?


Scott

Whoops!

James.

Originally Posted by honedright

What is the one question that will correctly determine the true color of the idol?

Ask: "If I asked the other tribe what colour the idol is, what would they say?"

Whatever answer you are given the opposite is true.

(I learned this on an old episode of Doctor Who. )

Originally Posted by Rajagra

Ask: "If I asked the other tribe what colout the idol is, what would they say?"

Whatever answer you are given the opposite is true.

(I learned this on an old episode of Doctor Who. )

I learned it watching the labyrinth!

I want to know the answer to the elevator question now, why not repost it?

Why couldn't youu just ask a tribe to open the door to the cave?

James.

A man lives on the 30th floor of an apartment building.

Each day he takes the elevator from his flat to the ground floor. However, his return trip on the elevator is slightly more complicated: On sunny days he take the elevator to the 20th floor and walks up the steps to his flat on the 30th. On rainy days he takes the elevator all the way to the 30th floor.

Why?

James.

Originally Posted by Rajagra

Ask: "If I asked the other tribe what colout the idol is, what would they say?"

Whatever answer you are given the opposite is true.

(I learned this on an old episode of Doctor Who. )

Correct.

I first heard this riddle back in the 70's. Never watched Dr. Who so didn't know it was "out there."

Too easy, ah well.


Scott

Originally Posted by Jimbo

A man lives on the 30th floor of an apartment building.

Each day he takes the elevator from his flat to the ground floor. However, his return trip on the elevator is slightly more complicated: On sunny days he take the elevator to the 20th floor and walks up the steps to his flat on the 30th. On rainy days he takes the elevator all the way to the 30th floor.

Why?

James.

On rainy days he's wearing rain boots and can reach the 30th floor button? He's very short.


Scott