Cristina was born in 1888. She just had her 30th birthday today how did that happen?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What number should come in place of the question mark below?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

I have branches, but no fruit, trunk or leaves. What am I?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

10+10 and 11+11 can give you the same answer.

Explain how?