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Topic:
Is this identity true, false, or obvious and easy to prove?
Replies:
3
Last Post:
Jan 6, 2012 3:43 AM



Lido
Posts:
2
From:
LA
Registered:
1/5/12


Is this identity true, false, or obvious and easy to prove?
Posted:
Jan 5, 2012 3:43 AM


n!  (n  1)! = (n  1)(n  1)!



