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?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

What is so fragile that saying its name breaks it?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

If you say my name, I will no longer exist. What am I?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

Replace the question mark with the number below given a simple math problem.