Brain Twisting Brain Teasers

Challenge 1: The Mysterious Lighthouse

A lighthouse is built on a small island. The light at the top of the lighthouse shines 1 mile out to sea. A man is standing on the beach, 1 mile away from the lighthouse. How far is he from the light?

Challenge 2: The Time-Traveling Clock

You are given two clocks, one set to 12:00 and the other set to 5:30. They are placed 5 miles apart. If you travel at a speed of 10mph, how long will it take you to travel from the 12:00 clock to the 5:30 clock?

Challenge 3: The Infinite Loop

A man is standing in front of a mirror in a hall of mirrors. Each mirror reflects the image of the man. How many mirrors are there?