I travel all around the world but always stay in the corner. What am I?

What am I?

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?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

How many times do a clock's hands overlap in a day ?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

How many letters are in the alphabet?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?