You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

What word is represented by this rebus?

How can you make number one disappear by adding something to it?

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?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

Can you write down eight eights so that they add up to one thousand?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Find the hidden panda in the image below.

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?