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In a row of 7 students all facing north, is P sitting exactly in the middle of the row? Statement I: P is 4th from the left end. Statement II: P is 4th from the right end. Which statement(s) is/are sufficient to answer the question?

Competition practiceData Sufficiency
  • AStatement II alone is sufficient but Statement I alone is not
  • BStatement I alone is sufficient but Statement II alone is not
  • CBoth statements together are needed (neither alone is sufficient)
  • DEither statement alone is sufficient

Step-by-Step Solution

In a row of 7, the middle is the 4th seat. 4th from the left (I) is the middle; 4th from the right (II) is also 7 - 4 + 1 = 4th from the left, the middle. Each alone answers it.
Answer: D) Either statement alone is sufficient

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