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12.09.2019 •
Mathematics
4. corrupt professor z has a class of 50 students. he needs to give exactly 10 a's. however five students already have a special deal (they are professor z's nephews and nieces) and will get a's for sure. how many ways can the 10 a's be distributed?
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Ответ:
Step-by-step explanation:
Given that the professor Z has a class of 50 students is corrupt. However five students already have a special deal (they are professor Z's nephews and nieces) and will get A's for sure.
Thus out of 10 students 5A's are reserved
Remaining 5 can be distributed in
I 5 to any one of the 45, II to any one of the 44
i.e. 45P5 ways
no of ways = 45P5 == 146611080
Ответ:
the answer is (x−3)(x−9)