Dumb dumb dumb!! I copied and pasted the Brainteaser that was posted today (?) but not the answer. Errrrr!!! And, for some reason, the Topic Log doesn't list it and Search can't find it. Hmmm? Maybe it's such a new post, it hasn't registered yet. In the meantime, can someone please give me the link to it? I want to flummox (isn't that a great word?) a bunch of engineers here at work. :D Thanks.