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

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Why did Buffon take the goal with him after every Juventus match?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What goes through cities and fields, but never moves?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

What is the word or phrase?

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

Count the number of triangles in the given picture.