There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

What is always in front of you but can’t be seen?

People put me on the table and cut me but do not eat me. What am I?

Imagine you are in a room with no windows or doors. How will you get out?

What has to be broken before you can use it?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Do You See It?

I travel all around the world but always stay in the corner. What am I?