Statements — I) Ravi has five pens. II) No one else in the class has five pens.\nQuestion — Which conclusion follows?

Introduction / Context:
We are given an exact count for Ravi and an exclusivity clause (“no one else … has five pens”). We must pick which conclusion is compelled from the list provided (I–IV in the original text), where IV is “Only one student in the class has exactly five pens.”

Why IV follows:

• Ravi has exactly five pens.
• No other student has exactly five pens.
• Therefore, exactly one student (Ravi) has five pens — which is Conclusion IV.

Why I–III do not follow:

• I (“All students have pens”): not stated; some may have none.
• II (“All students have five pens each”): contradicts the exclusivity clause.
• III (“Some students have more than five pens”): not given; others could have fewer than five or none.

Final Answer:
Conclusion IV