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

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

How many triangles can you find in this given picture?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

If 1+9+8=1, what is 2+8+9?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

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

There is something which you can be arrested for attempting but not for successfully completing.