Windows Calc informs me that the answer is 2, which is definitely=20 unexpected. My mobile (Android) gives a different answer to my Casio. The phone gives=20 the same answer as an Acorn Archimedes running BBC Basic. Colin -- cdb, colin@btech-online.co.uk on 11/03/2012 =20 Web presence: www.btech-online.co.uk =20 =20 Hosted by: www.justhost.com.au =20 =20 This email is to be considered private if addressed to a named individual= =20 or Personnel Department, and public if addressed to a blog, forum or news= =20 article. =20 =20 =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .