Logical Questions

Currently you're in a race, and you passed the person in 2nd place, what's your current place?

There are 25 mechanical horses and a single racetrack. Each horse completes the track in a pre-programmed time, and the horses all have different finishing times, unknown to you. You can race 5 horses at a time. After a race is over, you get a printout with the order the horses finished, but not the finishing times of the horses. What is the minimum number of races you need to identify the fastest 3 horses?

There are three boxes, one contains only white marble, one contains only black marble, and one contains both white marble and black marble. The boxes have been incorrectly labeled such that no label identifies the actual contents of its box. What's the minimum number of boxes that you need to open to arrange it properly?

The legend says that this problem was created by Albert Einstein in the last century. Einstein said that only 2% of the world could solve it.

There are five houses of different colors next to each other. In each house lives a man. Each man has an unique nationality, an exclusive favorite drink, a distinct favorite brand of cigarettes and keeps specific pets. Use all the clues below to fill the grid and answer the question: "Who owns the fish?"