Math

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door.

related riddles

If two's company, and three's a crowd, what are four and five?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What did 2n-1 say to 2n?