Number Genius

"Number Genius" is a mathematical game in which you need to solve problems at speed. As you progress, the examples become more complex, and less time is given for thinking.
The game is interesting to those who:
1. Likes to challenge himself and outdo others. Not everyone given limited time and lack of a calculator is able to reach at least the 6th level difficulty in this game.
2. Wants to maintain youth and brain health. It has been proven that regular mathematical exercises prevent a decrease in brain performance, increase brain activity, improve memory, communication skills, self-control, and maintain mental clarity.
3. Complains of forgetfulness, inability to formulate thoughts in words, general memory deterioration. Regular mental exercises are one of the main keys to solving problems.
4. Wants to count faster in his head. With regular training, you will count faster than typing numbers on a calculator.