If two's company, and three's a crowd, then whats four and five ?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

What number do you get when you multiply all of the numbers on a telephone's number pad?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

Find out the number of circles in the given picture having Illusion

How many letters are in the alphabet?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Count the squares in the matchstick puzzle below?

why number 8549176320 is one of a kind?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?