What is the Surname of Barbie Doll?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What does this Rebus Picture mean?

What type of tree can I carry in my hand?

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?

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

Can you find out the remainder when 3^300 is divided by 5?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?