单项选择题

If the cube of n is 180 greater than the square of n, then n=（）

A. 10
B. 9
C. 8
D. 7
E. 6

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单项选择题

How many students are either juniors or males or both（）

A. 678
B. 766
C. 948
D. 1,130
E. 1,312

单项选择题

If the radius of a circular region were decreased by 20 percent, the area of the circular region would decrease by what percent（）

A. 16%
B. 20%
C. 36%
D. 40%
E. 44%

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