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?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

During which month do people sleep the least?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What is common among 11, 69, and 88?

Why did Buffon take the goal with him after every Juventus match?

What is red and smells like blue paint?

What type of tree can I carry in my hand?