In the question three statements are given, followed by three conclusions, I, II and III. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.
Statement I: All desert is jungle
Statement II: All sand is desert
Statement III: No trees are jungle
Conclusion I: No trees are desert
Conclusion II: No sand is trees
Conclusion III: All jungle is sand
The basic diagram for the given statements
I. No trees are desert
From the basic diagram, no trees are desert. Hence conclusion I follows.
II. No sand is trees
From the basic diagram, no sand is trees. Hence conclusion II follows.
III. All jungle is sand
From the basic diagram, all jungle is not sand. Hence conclusion III do not follow.
$$\therefore\ $$Only conclusions I and II follow the given statements.
Hence, the correct answer is Option C
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