## An iron horse with a flaxen tail

An iron horse with a flaxen tail.
The faster the horse runs,
the shorter his tail becomes.
What is it?

A needle and thread.

An iron horse with a flaxen tail.
The faster the horse runs,
the shorter his tail becomes.
What is it?

A needle and thread.

See also best riddles or new riddles.

What two things can you never eat for breakfast?

Lunch and dinner!

How could you give someone $63 using six bills without using one dollar bills?

1 - $50 bill, 1 - $5 bill, 4 - $2 bills.

If you have one pound of rocks and one pound of feathers, which one will weigh more?

They both weigh a pound.

What goes through towns up hills but never moves?

A road.

We all know that square root of number 121 is 11. But do you know what si the square root of the number "12345678987654321" ?

111111111
Explanation:
It's a maths magical square root series as :
Square root of number 121 is 11
Square root of number 12321 is 111
Square root of number 1234321 is 1111
Square root of number 123454321 is 11111
Square root of number 12345654321 is 111111
Square root of number 1234567654321 is 1111111
Square root of number 123456787654321 is 11111111
Square root of number 12345678987654321 is 111111111 (answer)

Two convicts are locked in a cell. There is an unbarred window high up in the cell. No matter if they stand on the bed or one on top of the other they can't reach the window to escape. They then decide to tunnel out. However, they give up with the tunnelling because it will take too long. Finally one of the convicts figures out how to escape from the cell. What is his plan?

His plan is to dig the tunnel and pile up the dirt to climb up to the window to escape.

100 men are in a room, each wearing either a white or black hat. Nobody knows the color of his own hat, although everyone can see everyone else's hat. The men are not allowed to communicate with each other at all (and thus nobody will ever be able to figure out the color of his own hat).
The men need to line up against the wall such that all the men with black hats are next to each other, and all the men with white hats are next to each other. How can they do this without communicating? You can assume they came up with a shared strategy before coming into the room.

The men go to stand agains the wall one at a time. If a man goes to stand against the wall and all of the men already against the wall have the same color hat, then he just goes and stands at either end of the line. However, if a man goes to stand against the wall and there are men with both black and white hats already against the wall, he goes and stands between the two men with different colored hats. This will maintain the state that the line contains men with one colored hats on one side, and men with the other colored hats on the other side, and when the last man goes and stands against the wall, we'll still have the desired outcome.

Re-arrange the letters, O O U S W T D N E J R to spell just one word.

"Just one word".

Using eight eights and addition only, can you make 1000?

888 + 88 + 8 + 8 + 8 = 1000

Which weighs more, a pound of feathers or a pound of bricks

They weigh the same amount.