I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Which is heavier: a ton of bricks or a ton of feathers?

What can go through glass without breaking it?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?

Can you find the missing piece of the Porsche?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?