A father's child, a mother's child, yet no one's son.

Who am I?

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 one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

If 21x = 79x, what is the value of x?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

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

Which part of London exists in France as well ?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What four weights can be used to balance from 1 to 30 pounds?