If it's the question I'm thinking of then I think I skipped over the part where it said sorted. I thought it was asking what the data type of the array was. Oops. :(
Sam Davis's book is the only that's actually updated for the new syllabus. I know the Heinemann book actually has a few mistakes, one of which caused a lot of people to lose marks in a question in the 2002 exam from memory.
I believe that calculator is capable of expressing surds in their simplest form and capable of performing definite integration. These are features that are not permitted.