The number of ways in which an examiner can assign 50 marks to 11 questions, giving not less than 3 marks to any question, is

The number of ways in which an examiner can assign 40 marks to 6 questions, giving not less than 3 marks to any question, is

What is the number of ways in which an examiner can assign 10 marks to 4 questions, giving not less than 2 marks to any question ?

The number of ways in which and examiner can assign 20 maks to 4 question giving not less than 2 marks to any question is