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How many children are there in a row? Statement I: Rohit is 7th from the left end and 11th from the right end of the row. Statement II: Sonia is 5th from the left, and there are 4 children between Rohit and Sonia.

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

Step-by-Step Solution

I gives total = 7 + 11 - 1 = 17. II fixes only positions from the left, not the row's right end, so the total is unknown.
Answer: B) Statement I alone is sufficient but Statement II alone is not

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