I can write cow in 13 letters.

Can You?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

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

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Take one out and scratch my head, I am now black but once was red. What am I?

There is a place where if I stand up straight, I will still be considered sideways.

What word is represented by this rebus?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

Here is a Swiss Cross. You have to make two straight cuts in the figure so that it is divided into four congruent pieces. Also, you should be able to join these pieces into a square then. Can you accept this challenge?