Significant Figures: The last page of a book is numbered 764. The book is 3.0 cm thick, not including its covers. What is the average thickness (in centimeters) of a page in the book, rounded to the proper number of significant figures?
A. 0.0039 cm
B. 0.072 cm
C. 0.0079 cm
D. 0.00393 cm
E. 0.00785 cm
Answer: C
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