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?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

What is at the end of a rainbow?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Count the squares in the matchstick puzzle below?

What occurs twice in a week, once in a year but never in a day?

Which country gets ill every time?

Which is the correct shadow of the bird?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?