SOLUTION: Show that:
n(2nCn) = (n+1)[2nC(n+1)]
Algebra.Com
Question 920297: Show that:
n(2nCn) = (n+1)[2nC(n+1)]
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
This follows straight from the definition of nCk:
!})
Also,
 \cdot 2nC(n+1) = (n+1) \cdot \frac{2n!}{(n+1)!(n-1)!} = \frac{2n!}{n!(n-1)!})
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