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?

Make a sentence consisting of three words that have the whole alphabet.

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Who can jump higher than a Mountain?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

The centre of the third figure is empty. What digit should fit inside?

Look at the picture and find out which square is not linked with any of the other squares.

Can you fill the blank with the correct number?

6 30 870 756030 _____

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?