What is the centre of gravity?

What can go up a chimney down, but can’t go down a chimney up?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

What do you think with the below Picture ?

Move four matchsticks to the below square to form three squares?

What does this say?

XLR8

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Which Burger Is Different in below image?