# Dolly, the wannabe inventor, has come up with what seems to be a great invention................. product. What is it?

106 views

Dolly, the wannabe inventor, has come up with what seems to be a great invention.
It's a special lock that is fitted on your bathroom door. Every time you enter the bathroom and shut the door behind you, it automatically locks. When you want to leave, you just pull on the handle and the door will open!
Although this seems like a good invention, there is a design flaw that would stop people from buying this product.

What is it?

posted Oct 27, 2015

1. If no one is in the bathroom and the door closes, no one can get in.
2. If you're in the bathroom and for some reason you can't get the door, you're stuck because no one could help you.

If one closes the door from the outside, the door will lock.

answer Jul 13, 2016 by anonymous

Similar Puzzles

With smooth and slender hands she guards the great invention. The wind rushes around her while the stream is still, and somehow she keeps a rhythum to it all. The bugs sing their constant chirp, the sun and moon have their dance, and yet she will never leave her duty. What is she and what is she guarding?

There is a 5×5 grid in front of you. You have to fill 25 squares with only 0 and 1. But, every neighboring square's number's product has to be 0. How many possible grids there are?