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Question: What is A's position from the left end in a single row of children? Statement I: There are 8 children to the right of A. Statement II: There are 15 children in the row in total.

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
  • CEither statement alone is sufficient
  • DBoth statements together are needed (neither alone is sufficient)

Step-by-Step Solution

Statement I gives only the count to the right, and Statement II gives only the total; together, A's position from the left is 15 - 8 = 7, so both are needed.
Answer: D) Both statements together are needed (neither alone is sufficient)

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