Viggo has 25 hardcover books that he is arranging upright on the top shelf of a bookcase. Will the 25 books fit on the top shelf? (1) The top shelf of Viggo’s bookcase has a length of 36 inches. (2) The average (arithmetic mean) thickness of the 25 books is at most 112--> inches.

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Data Sufficiency questions are exclusive to the GMAT.

Each Data Sufficiency question poses a question, followed by two statements. Your task is to evaluate the statements to determine at what point there is or is not sufficient information to answer the question.

Unlike the Problem Solving questions, you do not actually have to answer the question posed. Instead, you select one of five fixed answer choices that offer different options about the sufficiency of the information provided in the two statements. 


Viggo has 25 hardcover books that he is arranging upright on the top shelf of a bookcase. Will the 25 books fit on the top shelf? (1) The top shelf of Viggo’s bookcase has a length of 36 inches. (2) The average (arithmetic mean) thickness of the 25 books is at most <img><m:mrow><m:mn>1</m:mn><m:mfrac><m:mn>1</m:mn><m:mn>2</m:mn></m:mfrac></m:mrow></m:math>--> inches.