Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

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 word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

There is something which you can be arrested for attempting but not for successfully completing.

Find the hidden tiger in the given optical illusion ?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

Find the missing number in the image below.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What kind of band never plays music?