fix functions

Author: daria-z

src/games/brain-even.js

@@ -6,7 +6,9 @@ const logic = () => {
   const maxNumber = 50;
 
   const questionNumber = Math.floor(Math.random() * maxNumber);
-  const correctAnswer = questionNumber % 2 === 0 ? 'yes' : 'no';
+
+  const isEven = (num) => num % 2 === 0;
+  const correctAnswer = isEven(questionNumber) ? 'yes' : 'no';
 
   return [questionNumber, correctAnswer];
 };

src/games/brain-prime.js

@@ -8,18 +8,20 @@ const logic = () => {
   const number = generateRandomNumber(1, maxPrimeNumber);
   const isPrime = () => {
     if (number <= 1) {
-      return 'no';
+      return true;
     }
 
     for (let i = 2; i < number; i += 1) {
       if (number % i === 0) {
-        return 'no';
+        return false;
       }
     }
-    return 'yes';
+    return true;
   };
 
-  return [number, isPrime(number)];
+  const correctAnswer = isPrime(number) ? 'yes' : 'no';
+
+  return [number, correctAnswer];
 };
 
 export default () => {