A father's child, a mother's child, yet no one's son.

Who am I?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?

What runs around the whole yard without moving?

What does it mean?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

On a bus, there is a 26-year-old pregnant lady.
A 30-year-old policeman.
A 52-year-old random woman.
And the 65-year-old driver.

Who is the youngest?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?