Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Solve the counting riddle by identifying the number of triangles in the given picture.

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.

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

If 21x = 79x, what is the value of x?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?