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?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

Which word does the below Plexor means ?

Buy me, smell me or deliver me, I do not change.

Who am I?

I always drive my customer away.

Who am I?

What is the centre of gravity?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

There was a strange boy who was born before his father. How can this be possible?