input: Write a function to generate an even number between 10 and 200 that is divisible by 5.
  
  assert generate_even_number()==10
  assert generate_even_number()==20
  assert generate_even_number()==150
  assert generate_even_number()==200
  
output: import random
  
  def generate_even_number():
      while True:
          num = random.randint(10, 200)
          if num % 2 == 0 and num % 5 == 0:
              return num