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

It belongs to you, but other people use it more than you do. What is it?

Which English verb becomes past tense just by rearranging the letters?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Can you spot the man between the coffee bean in the picture below ?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?