John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Why do we preferably have round manhole covers and not square ones?

What is the centre of gravity?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

Can you identify the hidden rebus in the image below?

Why 1729 is a magic number? Answer Logically.

Spot 5 differences in two Christmas tree below:

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

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

You need to move three matchsticks to form three squares. Can you do it?