Since nobody else has, I'll explain this in more detail. For each real number x, choose a sequence of rationals that approaches x as a limit. To be definite, you can take floor(x*n)/n, or use continued fractions or Farey sequences to get the approximations. These are the sets. Beyond a certain point, they will be bounded away from each other, so the intersection of any pair of them is finite. Franklin T. Adams-Watters --Dan P.S. Here's an old cardinality puzzle in the same vein: What's the largest size of a collection of subsets of Z such that any two of them intersect in a finite set? << Another nice problem. It is in fact C once again. This time you want Cauchy sequences. ___________________________________________________ Try the New Netscape Mail Today! Virtually Spam-Free | More Storage | Import Your Contact List http://mail.netscape.com