A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

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?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

10+10 and 11+11 can give you the same answer.

Explain how?

What is the next shape from answers A, B, C, and D figure?

Solve the mathematical equation in the picture below.

Remove two matchsticks to make the below equation correct.

What you cannot hold but it is yours?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?