What do you call a fish without an eye?

What part of the chicken has the most feathers?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

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?

How is a fly different from a mosquito?

You can see it everyday, But cannot touch it at will. What is it?

I am the fastest animal but cannot climb the tree. What am I?

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

What shoe company does this rebus represent?

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?