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.

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

John, Jack and Jill are in a desert. John doesn't like Jill and hence decides to murder him. He poisons the water supply of Jill. Since it is a desert area, Jill must drink or he will die of thirst.

Jack does not know of the actions of John and also decides to murder Jill. To succeed in his ill motives, he removes the water supply of Jill so he dies of thirst.

Jill dies due to thirst. Who murdered Jill?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

What do you call a fish without an eye?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?