A party may serve on any other party no more than 25 written interrogatories, including all discrete subparts. This packet provides general guidance about asking written questions to another party in the case.This packet provides general guidance about asking written questions, called "Interrogatories," to another party in the case. Form Interrogatories are a list of questions on a court form. Rules of the Central District of California. Rule 801(d) of the Federal Rules of. Evidence permits a prior inconsistent statement of a witness in a deposition to be used as substantive evi- dence. Complete Your Written Responses. In this spirit, a party can deliver a request for production after 21 days of service of the complaint and summons. Rule of Civil Procedure 37 and Central District of.