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?

Client Dempsey living in one of the East Coast states of the U.S. was talking to Landon Donovan, who was living in the West Coast state of the U.S.

Dempsey: What time is it?
Donovan: Wow, It is the same time here.

How is this possible?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What does below chemistry rebus means?

Can you Find and name the hidden bird in the picture below ?

Where do fish keep their money?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?