Before Mount Everest was discovered, what was the highest mountain in the world?

What is the Surname of Barbie Doll?

I know a nine-letter word having only one vowel.
Do you ?

I make two people out of one. What am I?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

How many sides does a circle have?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?