On 12 March 2012 07:50, RussellMc wrote: > Can you see WHY the first version does not =3D "9" if it doesn't. > It's because the scope of the "/" operator does not extend beyond the > following number (here =3D 2) whereas all solutions that obtain "1" as > an answer do not meet this requirement. > The OP was about not to type the multiplication sign it 6 / 2 ( 1 + 2 ) This should be 'syntax error' as someone suggested, but instead in many calculator the '2' before the bracket is ignored it seems (at least on the iPhone). Therefore 6 / (1 + 2 ) interpreted only giving a result of 2. If you type the '*' in between the '2' and the bracket then of course you get '9' on iPhone. Tamas --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .