Deepak, Rahul, Manoj, and Vinod are
brothers. Who is the heaviest?
1. Rahul is heavier than Deepak and Vinod,
but lighter than Manoj.
2. Deepak is lighter than Rahul and Manoj,
but heavier than Vinod.
This statement tells us Rahul > Deepak and Rahul > Vinod. It also states Manoj > Rahul. By combining these, we get a clear, complete order for the heaviest person: Manoj > Rahul. This definitively shows that Manoj is the heaviest. Therefore, this statement alone is sufficient.
This statement tells us Rahul > Deepak, Manoj > Deepak, and Deepak > Vinod. This establishes that both Rahul and Manoj are heavier than Deepak, but it provides no information to compare Rahul and Manoj directly. We cannot determine who is the heaviest from this statement alone.
Conclusion: Statement I alone is sufficient to answer the question, while Statement II alone is not.
Final Answer: The correct option is C.
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