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?

Why is the Hole below a Lock?

Can you find the 09 errors in the picture below?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Which is the smallest number that you can write using all the vowels exactly once?

What word begins and ends with an E, but has only one letter?

Can you make four (4) nines (9) equal 100?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?