RBI Grade B Officers 21 Nov 2015 Paper

(2) All pets are animals.All animals are reptiles.
A + A⇒ A – type of Conclusion“All pets are reptiles.”
No bird is an animal.
All animals are reptiles.
E + A⇒ O1–type of Conclusion“Some reptiles are not birds.”
No animal is a bird.
Some birds are insects.
E + I ⇒O1–type of Conclusion“Some insects are not animals.”
Venn diagrams of “Some insectsare not animals”:

Venn diagrams II states that,“All animals are insects.”It can also be represented asthe following diagram :