If these are math flash cards, I'd delete the a records, replacing them with a calculation field in a that computes the answer. If these are not math records, I'd replace the a records with a text field in b that shoes the answer.
To randomize a found set of records:
#Bring up a found set of records to randomize. You might perform a find here or use Show All Records
Replace Field Contents [no dialog; YourTable::Order ; Random ]
Sort Records [Restore ; no dialog ] ---> sort on YourTable::Order
Thanks Phil. I've rethought it and for the PDF exports the page will be twice as long. On the iPhone I can just flick my finger to see the answer below by scrolling then tap to the next page. This works great with PDF Expert but not he Apple reader.
Now that I have the answer and question in one field it makes more sense. Thanks for the randomizing script.