Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

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.

What does this rebus puzzle means ?

why number 8549176320 is one of a kind?

What does does this rebus picture means ?

How many letters are in the alphabet?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Who always enjoys poor health?

You can move only two matchsticks in the given picture. What is the highest number you can form by doing it?