Which English verb becomes past tense just by rearranging the letters?

Can you name some countries which do not have the alphabet 'A' in them?

Replace the question mark with the correct number in below Picture:

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Solve the equation in the image by looking at the pattern closely.

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

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

A woman lives in a Tall building thirty-six floors high and 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?

People put me on the table and cut me but do not eat me. What am I?