John, What problem? I see no problem. I can square 2 fig numbers in my head, 3 with less chance of accuracy, and 4 with even less. It's a trick. Hugh. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.bcn.mythic-beasts.com/pipermail/bitlist/attachments/20101031/dc40f083/attachment.shtml