Question: Write a function called friendly ( greeting ) that takes a string named greeting as input. If the greeting begins with the words 'Hello' or

Write a function called friendly(greeting) that takes a string named greeting as input. If the greeting begins with the words 'Hello' or 'Hi', the function returns some friendly greeting string of your choice. Otherwise, if the greeting string ends with a question mark, the function returns the string 'Good question!'. Otherwise, the function returns with some string indicating that it didn't understand the greeting (e.g., 'I am sorry, but I did not understand you.').

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