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

2, 3, 5, 9, 17, _ What is the next number in the sequence?

On a special event at the prison, 5 prisoners John, Jacob, Krist, Tang, and Dang given a chance to go to a sauna and can bring one thing with them.

Following are the things that the prisoners bring with them.
John: A soda
Jacob: Thermos
Krist: Book named "How to kill"
Tang: A Walkman
Dang: Harmonica

Since it is a Sauna, no one can see each other. After a while When the steam is switched, Tang was found dead and there was blood all around.
J Bond was called and he instantly come to know who can be the murderer. How?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Can you find out the number that should replace the question mark with a valid reason?

What kind of band never plays music?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What kind of storm is always in a rush?

what does the below math rebus puzzle mean?