Hi,

I could use some help with my proving. The assignment goes as follows:

"Prove with mathematical induction that

((n+1)(n+2)...(2n)) / 2^{2}

is a whole number with all values of n"

I know the basic principle of induction but I can't see how can I show the "n+1" -step.

Please excuse my inaccurate expressions, my native language is finnish I would REALLY appreciate the help!