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How many students are standing in a single row? Statement I: R is 7th from the left end and 11th from the right end. Statement II: There are 9 students to the right of R. Which statement(s) is/are sufficient?

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

Step-by-Step Solution

From I, total = 7 + 11 - 1 = 17. II fixes only the count on R's right, so the left side stays unknown.
Answer: A) Statement I alone is sufficient but Statement II alone is not

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