Move four matchsticks to the below square to form three squares?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

What Adam and Eve do not have but the rest of the people have?

Can you count the number of triangles in the picture below?

The dirtier I get, the whiter I look. Who am I?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

What is the end of everything?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

What do you see in the image below