I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What has no start, end, or centre?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

You need to arrange three 7 and mathematical symbols to form number 1?

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

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

In the image below, can you find the value of an angle(y)

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?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?