A party may serve on any other party no more than 25 written interrogatories, including all discrete subparts. Interrogatories or requests for admissions to a party, as a matter of right, shall not exceed forty (40) in number.Interrogatories are numbered written questions sent to the other side. Rule 33 provides for the use of interrogatories to parties and Rule 34 provides for the use of requests for production. Basically, you switch out the parties name and serve the discovery to each defendant. 4: Identify all persons who arrived at the scene within two (2) hours after the accident. If you fill out a form on a webpage, you will lose your progress.