What goes up but never comes down?

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

Can anyone tell me a word in the English dictionary which has a silent 'z'?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

I have eight fingers and two thumbs but I do not live. What Am I?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

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

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

I have teeth but i don't bite. Who Am I ?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?