Check if a Number is Even or Odd
Write a function named isEven that takes one parameter, num, which should be a number. The function should return "Even" if the number is even and "Odd" if the number is odd.
Example 1
Input: isEven(7);
Output: "Odd"
Example 2
Input: isEven(10);
Output: "Even"
Example 3
Input: isEven(21);
Output: "Odd"
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