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

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Buy me, smell me or deliver me, I do not change.

Who am I?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

There are forty elephants and they have forty-fore heads. How can this be possible?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

Remove two matchsticks to make the below equation correct.

Akbar summoned Birbal out of anger.
He told him that he will have to face death.
He asked him to make a statement and if the statement is true he will be buried alive and if the statement is false, he will be thrown at lions.
After hearing Birbal’s statement, Akbar could do nothing but smile.
He gave him 5 gold bars and let him go.

What did Birbal say?

What is always in front of you but can’t be seen?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?