Geography Question
Here is a thinking puzzle that I've always enjoyed. Can you think of a place on the earth such that the following navigation can be done? You start from a point and travel 100 kilometers due south. Then you turn and travel 100 kilometers due east. Finally you turn again and travel 100 kilometers due north. You end up at the same place from which you started. Where did you start?
Which Switch?
You are standing outside a room with a closed door. On the wall beside the door are three power switches, all off. You want to turn on the lamp inside the room but don't know which switch controls the lamp, and you can't see inside the room with the door closed. You can't tell if a switch controls anything else. Assuming that you can flip the switches any way you want, how would you tell which switch controls the lamp after you entered the room? No fair going back to reflip the switches after the door has been opened. Distinction
I'm sure you've taken one of those intelligence tests where they ask you to look at a series of objects and pick out the one that does not belong. The problem I have with those tests is that the "correct" solution depends on the perspective of the test author. I can usually find several valid answers. And even though I impugn that type of test, I did run across one example that I felt was very good.
From the series of five objects below, which one is unique? Choose the "best" answer.
The Vanishing Leprechaun
Here's an old puzzle that has always intrigued me. Take a close look at the following two cartoon pictures. Notice that each picture is divided into three panels. The only difference between the upper picture and the lower one is the position of the top two panels. They've been swapped, left and right. Now count the leprechauns in each picture. Notice something strange? Better count them again just to be sure.
You might be tempted to say "The guy who's third from the right has disappeared." However, if you'll notice closely, he's just moved to the near center of the bottom picture, under the words "It's a".
So, which one has disappeared? And where did he go?
Click here for the explaination.
But don't spoil your fun by giving up too soon.
Leaping Frogs
Click on the frogs to jump them over each other and get both groups to the other side.
A frog can move forward to an empty space, or jump one frog forward to an empty space.
See if you can figure this one out by yourself.
