Find the next number in the sequence

5 12 24 36 ?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

How many words can a pen with half refill write?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Prove that the below maths equation is true.

8 + 8 = 91

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

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

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?