Why Wine Glass Stem is so long?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

What has many teeth, but cannot bite?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

When 99 is considered higher than 100?

In the image below, can you find the value of an angle(y)

What can go through glass without breaking it?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

What is the riddle which can be asked all day with a different correct answer each time.

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?