Question : Directions: One/two statement(s) is/are given followed by two conclusions, I and II. You have to consider the statement(s) to be true, even if it/they seem(s) to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow(s) from the given statement(s).
Statements:
All frogs are tortoises.
No tortoise is a crocodile.
Conclusions:
I. No crocodile is a frog.
II. No frog is a crocodile.
Option 1: Only I follows
Option 2: Only II follows
Option 3: Both I and II follow
Option 4: Neither I nor II follows
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Correct Answer: Both I and II follow
Solution : The possible Venn diagram according to the given statements is as follows –
Let's analyse the conclusions –
Conclusion I:
No crocodile is a frog – Based on the given statements, it is given that all frogs are tortoises and no tortoise is a crocodile. From this, it can be inferred that no crocodile is a frog. So, this conclusion follows.
Conclusions II:
No frog is a crocodile – Based on the given statements, it is given that all frogs are tortoises and no tortoise is a crocodile. From this, it can be inferred that no frog is a crocodile. So, this conclusion follows.
So, both I and II follow. Hence, the third option is correct.
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