Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

What does a man do only once in his lifetime, but women do once a year after they are 29?

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

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

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?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

What is the riddle which can be asked all day with a different correct answer each time.

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?