When my father was 31 I was 8. Now he is twice as old as me. How old am I?

What Does this text mean:

important=important

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

Which is the smallest number that you can write using all the vowels exactly once?

If you say my name, I will no longer exist. What am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

what's the probability of getting a king or a queen from a pack of 52 cards?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?