Can you replace the question mark with the correct number in the below table sequence?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

What is the next number in this series?

4,12,84,3612....

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Solve the puzzle by telling what does below picture means.

Can you divide the below-given shape into four equal and identical pieces?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?

Which flower has two lips?