A simple probability question!

[srikank]

Hi,

I am having difficulty with the following problem:

You can have a state of 256 different elements (0-255). An element between 0-255 appears only once in a state of 256 elements. I understand that there are N! possible states. Now I want to calculate the probability of a state that has some k elements (not necessarily consecutive) common with a state that I have picked. Any suggestions on how to approach this problem? I apologize for the ignorance if it is too simple.

Thank you!

[The Dude]

At the far left edge of this site is a list of forums. About halfway down is "Probability." You'll get good advice there.

Welcome to the forums.