input: Write a python function to create an Excel file with random numbers between 1 and 30 in a 10x3 grid.
  assert create_random_numbers_excel() == 'RandomNumbers.xlsx'
  assert os.path.exists('RandomNumbers.xlsx') == True
  assert pd.read_excel('RandomNumbers.xlsx').shape == (10, 3)
output: import pandas as pd
  import numpy as np
  
  def create_random_numbers_excel():
      data = np.random.randint(1, 31, size=(10, 3))
      df = pd.DataFrame(data, columns=['A', 'B', 'C'])
      filename = 'RandomNumbers.xlsx'
      df.to_excel(filename, index=False)
      return filename