81 x 9 = 801. What must you do to make the this equation true?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

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

Why 1729 is a magic number? Answer Logically.

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?