Is this a valid python statement ? birth_year = input('birth year: ') age = 2019 - birth_year print(age) Ans: no correct is: birth_year = input('birth year: ') age = 2019 - int(birth_year) print(age) ==== Whats the output for: hobby = 'Eat biryani and sleep well' print(hobby.upper()) output: EAT BIRYANI AND SLEEP WELL Note: raw_input is being used in Python 2. In Python 3 creators replaced that with just input. ==== Whats the output: Quiz: hobby = 'Eat biryani and sleep well' print(hobby.replace('sleep well', 'learn python') output: Eat biryani and learn python