(i) All papers are woods → UniversalAffirmative (A–type). (ii) Some woods are leaves → ParticularAffirmative (I–type). (iii) No mobile is a band → UniversalNegative (E–type). (iv) Some mobiles are not bands →Particular Negative (O–type). (2) All ladders are snakes.Some snakes are frogs. A + I ⇒No ConclusionConclusion I and ConclusionII form Complementary Pair. Therefore, either ConclusionI or Conclusion II follows.