John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

Can you name four days which start with the letter 'T'?

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?

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

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

What does this rebus puzzle means ?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?