(g) Limitation on Interrogatories. (a) Discovery Methods.The commissioner shall, at the request of either of the parties, return the interrogatories and answers filed with him, and a report of the proceedings. A party may serve on any other party no more than 25 written interrogatories, including all discrete subparts. Write your Interrogatories. Write simple questions that may help you prove or defend your case. Both parties must do so. A brief description of each follows below. 1. Interrogatories. Any other party no more than 40 written interrogatories, including all discrete subparts. In Virginia, interrogatories are limited to 30.