If 21x = 79x, what is the value of x?

What came first, the chicken or the egg?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Why is the Hole below a Lock?

Count the number of squares in the picture below.

Can you find the 09 errors in the picture below?