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?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What seven-letter word has hundreds of letters in it?

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

Can you fill the blank with the correct number?

6 30 870 756030 _____

Which tank will fill first?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

My location can be determined by the below rebus.
So where am i ?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?