How many triangles can you find in this given picture?

Different lights make me strange by changing me into different sizes. What am I?

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?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

Our product and our sum always give the same answer. Who are we?

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?

What building has the most stories?

What happened when the wheel was invented?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

What is both possible and impossible at the same time?