Adding numbers to memory

If you want to have an excellent memory, train and develop mental and analytical skills, then this program is for you. With this program you can develop the skills of adding numbers in the mind.
In the program, you can make settings: range, number and time interval to demonstrate one number. At the start of the task there is a demonstration of numbers of a given range.
In the end, after completing the entire task, your result is requested and compared with the correct one.
Data is recorded in the result history.