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?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

I shave every day, but my beard stays the same. What am I?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

Can it be possible to build a house that has all its four walls facing towards the South?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?