Well, I do not agree with you, Sree. Basing on my experience (and I did some experiments with my SCWCD and SCBCD surveys) I can say that 1. The ORDER of questions you get DEPENDS on your answers. If you say that you do not know, say, EL, security and patterns well, you'll get the 'most difficult' questions first. 2. The NUMBER of questions PROBABLY depends on your answers, but im not sure.