Exams › IBPS PO › Reasoning

What is Arjun's position from the left, and what is the total number of persons in the row? Statements: I. Arjun is 9th from the right and Rahul is 9th from the left. II. When Arjun and Rahul interchange their positions, Rahul will be 27th from the left.

1. The data either in statement I alone or in statement II are sufficient to answer the question.
2. The data in both statements I and II together are necessary to answer the question.
3. The data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question.
4. The data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.

Correct answer: The data in both statements I and II together are necessary to answer the question.

Solution

Statement I gives Arjun's position from the right and Rahul's position from the left, but not the total number of persons or Arjun's left position. Statement II alone also does not uniquely determine both values. Together, they allow the total number of persons and Arjun's position from the left to be found.

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