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

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

Who always enjoys poor health?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What is the Surname of Barbie Doll?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

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