If he lacks knowledge or information sufficient to form a belief as to the truth of an averment, he shall so state and his statement shall be considered a denial. If in good faith a pleader intends to deny only a part or a qualification of an averment, he shall specify so much of it as is true and material and deny the remainder. All denials shall fairly meet the substance of the averments denied. This rule shall have no application to uncontested actions for divorce, or to answers required to be filed by clerks or guardians ad litem.
A complaint filed by or against two [2] or more plaintiffs shall be taken and construed as joint, separate, and several as to each of said plaintiffs.
Ind. R. Civ. P. 8