[](https://travis-ci.org/kir58/project-lvl1-s412) Brain-games set up: ``` sudo npm install -g braingk58 ``` [](https://asciinema.org/a/szJneOvmPD9VhJdj37vKOP52R) Calc: ``` 1 - brain-calc ``` [](https://asciinema.org/a/DfRiqmk3PJ2r2r7MGcomLyTjG) Even: ``` 2 - brain-even ``` [](https://asciinema.org/a/2aarRFpAn8chLajpjHUjDUM7E) Great common divisor: ``` 3 - brain-gcd ``` [](https://asciinema.org/a/2idAKdYFnseJ80gsolo6ec3lR) Prime: ``` 4 - brain-prime ``` [](https://asciinema.org/a/WXlEzmFWj6s77ecNFbegqQz8g) Progression: ``` 5 - brain-progression ``` [](https://asciinema.org/a/Z9VXN7fxJ7fz0wIczWOFqHo3m)