RBI Grade B Officers 21 Nov 2015 Paper

(i) All months are days → UniversalAffirmative (A–type).
(ii) Some hours are calendars →Particular Affirmative (I–type).
(iii) No hour is a day →UniversalNegative (E–type).
(iv) Some hours are not days →Particular Negative (O–type).
(3) All months are days.
No day is an hour.A + E⇒E–type of Conclusion“No month is an hour.”
This is Conclusion I.
Some calendars are hours.No hour is a day.I + E⇒ O–type of Conclusion“Some calendars are not days.”
Venn diagrams of “Some calendarsare not days.”

Venn diagram II states that“All days are calendars.”It can also be represented as :

i.e., All calendars are days.Therefore, Conclusion II alsofollows.