Possible Duplicate:
prove that $(2n)!/(n!)^2$ is even if $n$ is a positive integer
Show that $\binom{2n}{ n}$ is divisible by 2?
Any help would be appreciated..
Possible Duplicate:
prove that $(2n)!/(n!)^2$ is even if $n$ is a positive integer
Show that $\binom{2n}{ n}$ is divisible by 2?
Any help would be appreciated..