I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What is the fastest way to double your money?

I have Rs.50 and I spend it in the way as below.

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

Complete the table series riddle by finding the number that can replace "??".

We can be boring,Or interesting.
We can be long,Or short.
We can have pictures,Or just words.
Many love us,But many also hate us.
What are we?

What do you answer even though it never asks you questions?