What does below pictogram mean?

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?

What kind of storm is always in a rush?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Take away the whole and some still remain. What is it?