input: Write a python function to determine if a number is even or odd.
  assert is_even_odd(2) == "Even"
  assert is_even_odd(3) == "Odd"
  assert is_even_odd(0) == "Even"
  assert is_even_odd(15) == "Odd"
  assert is_even_odd(100) == "Even"
output: def is_even_odd(n):
      return "Even" if n % 2 == 0 else "Odd"