What can you catch but never throw?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

It is always ahead of me yet I can never see it. What is it?

Can you find the missing piece of the Porsche?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

What is harder to catch the faster you run?

What work can one never finish?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?