### Brain Teasers

# The Four Doors

Other
Other brain teasers don't fit into any other category, so they can be unique and challenging.

A man wakes up in a room. He sees no windows, a table with a note on it, and four doors ahead of him. Each door has a different symbol on its face: rectangle, kite, rhombus, and trapezoid.

He then walks to the table and reads the message:

"Three of these doors hold behind them a deadly booby trap, and one of them leads to the exit of this house. You can only open one door. The door that leads to the exit of this house can be deduced by looking at a string of numbers hidden somewhere in the house. Figure it out quickly, however, because as soon as the clock strikes noon, all the doors in the house will become permanently locked."

He then searched everywhere in the room, until he found a string of numbers carved under the table:

1 - 4 - 8 - 11 - 1

He thought long and hard as the clock ticked away, getting closer and closer to his potential doom.

Suddenly he realized what the numbers meant, and promptly went over to the correct door, which he opened and managed to escape the house unhindered.

Which door leads to the exit?

He then walks to the table and reads the message:

"Three of these doors hold behind them a deadly booby trap, and one of them leads to the exit of this house. You can only open one door. The door that leads to the exit of this house can be deduced by looking at a string of numbers hidden somewhere in the house. Figure it out quickly, however, because as soon as the clock strikes noon, all the doors in the house will become permanently locked."

He then searched everywhere in the room, until he found a string of numbers carved under the table:

1 - 4 - 8 - 11 - 1

He thought long and hard as the clock ticked away, getting closer and closer to his potential doom.

Suddenly he realized what the numbers meant, and promptly went over to the correct door, which he opened and managed to escape the house unhindered.

Which door leads to the exit?

### Hint

Think really hard. Time is running out. Tick, tock, tick...### Answer

The correct door is labeled with the trapezoid. The shape formed by connecting the string of numbers on the face of a clock is a trapezoid.Hide Hint Show Hint Hide Answer Show Answer

## What Next?

View a Similar Brain Teaser...

If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.

### Solve a Puzzle

## Comments

This took a second reading and a second cup. Good One.

Good one!

* kaboom! * I was just blown to bits! I assumed the numbers were the units of measurement for the sides of the shape. Only problem is that doesn't fit any of the shape options. Perhaps I'd just have been locked away permanently until I slowly starved to death.

Anyway, fun teaser.

Why wasn't it in the SITUATION category? Even the MATH category seems more appropriate than OTHER.

Anyway, fun teaser.

Why wasn't it in the SITUATION category? Even the MATH category seems more appropriate than OTHER.

I love your teaser, even though I would have died, if it were me.

omg!! that was SO HARD!! i suck at these!! oh well...iv only just joined...

if_i_may94

if_i_may94

I managed to get the correct answer by looking at the difference between each number and the next:

3-4-3-10

If each is the length of an adjacent side, then the shape is a trapezoid.

3-4-3-10

If each is the length of an adjacent side, then the shape is a trapezoid.

actually, the three sided aren't long enough to produce a trapezoid with any area.

I had to use the clue, but then iit became clear that the numbers were hour marks. The rest was easy.

After reading this teaser (and the answer), I looked at a clock face in my bathroom. I connected the numbers in my head and found out that it really is a trapezoid!!!

Good teaser!

To post a comment, please create an account and sign in.

## Follow Braingle!