There are many different methods for generating a random number. These methods are called random number generators. The most important property of random number is that it has nothing to do with the number that comes after and the number that comes before it. Random number

The truly random number is the Use of physical phenomena: for example, flipping coins, dice, spinning wheels, the Use of electronic noise, nuclear fission, and so on. This random number generator is called physical random number generator, and their disadvantage is that the technical requirements are relatively high.

In practical applications, the Use of pseudo-random number is often sufficient. These number columns are "seemingly" random numbers, when in fact they are generated by one fixed, repeatable Calculator method. They are not really random, because they can actually be computed, but they have statistical characteristics similar to random numbers. Such a generator is called a pseudo-random number generator.