Permtations and Combinations

[Louise Johnson]

Question : Simplify as much as possible.

$\displaystyle \frac{{k(k + 2)!}}{{(k + 3)!}}$

my answer k(k+2)

Can it really be that simple?? (i am guessing not)

Louise

 

[tkhunny]

You'll kick yourself.

It can be that simple, and it is, but you didn't quite get it.

$\displaystyle \frac{k}{k+3}$

 

[Louise Johnson]

Grr so close!!. Thanks