A thief steals a watch from a store. A detective deduces that the thief must have entered through the window because the front door was locked from the inside, no keys were missing, and footprints on the windowsill match the stolen item's dust residue. However, the store is on the 10th floor of a building with no exterior ladders or scaffolding. How did the thief escape?

Two cars start driving toward each other from towns 300 miles apart. Car A travels at 60 mph, and Car B travels at 40 mph. At the exact same moment Car A starts, a remarkably fast falcon flies from Car A's roof toward Car B at 100 mph. When the falcon reaches Car B, it immediately turns around and flies back to Car A, repeating this until the cars crash. What total distance does the falcon fly?

Five knights compete in a sword tournament. Sir Vance scored higher than Sir Uther. Sir Terry scored lower than Sir Quinn but higher than Sir Vance. Sir Ron scored higher than Sir Quinn. Who won first place in the tournament?

An antique vault requires a sequence of four colored lights to be lit: Red, Blue, Green, and Yellow. Red must flash before Blue. Green cannot flash immediately after Red. Yellow must be the very last light. What is the only correct sequence?

The sand castle is bigger than the shell, and the swimmer is bigger than the sand castle. Which one is the middle size?

A shepherd needs to cross a river with a wolf, a goat, and a cabbage. His boat can carry only himself and one item at a time. If left unattended, the wolf will eat the goat, and the goat will eat the cabbage. How many one-way river crossings must the shepherd make to transport all three safely to the other side?

A wealthy merchant locks a precious gem inside a heavy chest. The chest has two keyholes, and he gives two identical locks to his business partners, but no keys. How did they secure the chest without mailing keys back and forth?