I have branches, but no fruit, trunk or leaves. What am I?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

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

Solve the equation in the image by looking at the pattern closely.

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Can you find out the total number of triangles in the given figure?

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

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

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?