A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

A man dies of old age on his 25 birthday. How is this possible?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

Below rebus represent famous DiCaprio movie. Can you name it?