Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

Which flower has two lips?

What work can one never finish?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Find the number of squares in the below picture

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?