Brain-Games Brain Games is a series of small console math games Games 1. Brain-Even 📟 Check if the number is even 2. Brain-Calc 🧮 Calculate the result of a given expression 3. Brain-GCD 📊 Find the greatest common divisor of two given numbers 4. Brain-Progression 🎲 Find the missing element in progression 5. Brain-Prime 💡 Check if the number is prime