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

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

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

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?

Before Mount Everest was discovered, what was the highest mountain in the world?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What is the riddle which can be asked all day with a different correct answer each time.

Can you write down eight eights so that they add up to one thousand?

John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?