IBPS RRB Officer Prelims 09 Sep 2017 Shift 1 Paper

(i) All tables are desks → UniversalAffirmative (A–type).
(ii) Some controls are rules → ParticularAffirmative (I–type).
(iii) No chair is a table → UniversalNegative (E–type).
(iv) Some chairs are not tables →Particular Negative (O–type).
(4) All powers are authorities.
All authorities are controls.
A + A ⇒ A–type of Conclusion“All powers are controls”.
This is the Conclusion I.
Negative Conclusion does notfollow from the Affirmative Premises.