What is the riddle which can be asked all day with a different correct answer each time.

What makes this number unique: 8,549,176,320?

Out of four images which one is the odd one out?

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?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

How many times in a given day, minutes and hour clock comes in a straight line ?

Spot 5 differences in two Christmas tree below:

what does the below rebus means?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?