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

What's the best place to go shopping in the ocean?

What does this mean?

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How can you drop a raw egg from a height onto a concrete floor without cracking it?

What is so fragile that saying its name breaks it?

You are given 16 witch hats. The hats are divided in four different colours – red, blue, green and yellow. Every colour has been assigned to four hats. Now each of the hat will be glued with a label of an arithmetic sign – ‘+’, ‘-‘, ‘x’ or ‘/’. But you can label one sign only once on one colour. In such an arrangement, the hats can be uniquely defined by its colour and symbol.

Can you arrange all the 16 hats in a 4x4 grid in a fashion that no two rows and columns have a repetition of colour or sign?
We have arranged four hats in the below picture to assist you.

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?