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omeli [17]
3 years ago
11

Discrete Math (MACM 101)

Mathematics
1 answer:
Alona [7]3 years ago
7 0
I hope this helps you



n!/(n-3)!=3.n!/(n-2)!


3. (n-3)!=(n-2)(n-3)!


3=n-2


n=5
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