Question
Question: The number of ways in which an examiner can assign 30 marks to 8 questions, giving not less than 2 m...
The number of ways in which an examiner can assign 30 marks to 8 questions, giving not less than 2 marks to any questions, is -
A
21C7
B
10C7
C
22C7
D
None of these
Answer
21C7
Explanation
Solution
Distribute 2marks each to 8 Question, this can be done in 1 way now distribute remaining (30 –16) = 14 marks 8 questions any question will get any number of mark. This can be done in 16+8–1C8–1 = 21C7 ways.