There was a kingdom in which the king had no heir to take over his thrown. Even the queen was dead and he himself was on the verge of dying. He thought about it and then summoned all of the teenagers. He gave one seed each to all of them and asked them to grow the plant. He announced that the one with the most beautiful plant will become the king/queen of the empire after the death of the king.

After a month, all of them were called. The king looked at all of the plants but announced the girl with an empty pot as the queen of the empire. Why?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Whats the next number in the below number sequence pattern.

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

If your uncle’s sister is not your aunt, what relation is she to you?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

Take away the whole and some still remain. What is it?

Which is faster, Heat or Cold ? Explain.