### How do you know that a number is prime?

In this article, you are presented with several criteria to check whether a number is prime or not.

### What is the Möbius strip? History and Explanation

Discover everything you need to know about the Möbius strip through this article!

### Optimization of trajectories in a simple environment

How to optimize the trajectory between a point A and a point B? Find out in this article!

### The paradox of the Chevalier de Méré

What is the Chevalier de Méré paradox? Find out in this article!

### All about group testing

What is the group testing methodology? The answer in this article !

### NEOs: detection, trajectory and impact

How to detect near-Earth cruisers? The answer in this article !

### How to estimate integrals? The rectangle method

When it is complicated to calculate integrals, one can estimate their value using areas of rectangles.

### Study of the stiffness of the bristles of a toothbrush on the effectiveness of brushing

Do stiffer bristles make brushing your teeth more efficient? The answer in this article !

### Modeling and optimization of thermal building in summer

How to optimize the temperature of buildings in summer? The answer in this article !

### What is the top speed of a Formula 1 car?

What are the Formula 1 speed records? Discover historical records