Hexlet tests and linter status:

Install

make build

make publish

make package-install

Brain even

brain-even

Welcome to the Brain Games!
May I have your name? Bill
Hello, Bill!
Answer "yes" if the number is even, otherwise answer "no".
Question: 15
Your answer: yes

'yes' is wrong answer ;(. Correct answer was 'no'.
Let's try again, Bill!

Correct!

Brain calc

brain-calc

Brain gcd

brain-gcd

Brain progression

brain-progression

Brain prime

brain-prime