John is the son of Jacob.
So,
Jacob is the_____of John's father?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

What does this simple rebus mean?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Count the number of squares in the picture below.

What can you hold in your right hand, but never in your left hand?

Be active and find the killer in the picture Riddle below.

Solve the equation in the image by looking at the pattern closely.

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?