input: Write a function to generate a set of 10 unique random numbers between 0 and 10.
  assert len(generate_unique_random_numbers())==10
  assert all(0 <= num <= 10 for num in generate_unique_random_numbers())
  assert len(generate_unique_random_numbers()) == len(set(generate_unique_random_numbers()))
output: import random
  
  def generate_unique_random_numbers():
      return set(random.sample(range(11), 10))