You knock a Table over in the library, and suddenly 20 eyes are looking at you.

If two's company, and three's a crowd, then whats four and five ?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

There is something which is always coming but never arrives?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

You are given a set of weighing scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other. The 12 marbles appear to be identical. 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more. Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light

I cannot talk, but I always reply when spoken to. What am I?