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If n= 2*3*5*7*11*13*17, then which of the following statements must be true?
I. $$n^{2}$$ is divisible by 600
II. n+19 is divisible by 19
III. $$\frac{(n+4)}{2}$$ is even
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A.I only
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B.II only
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C.III only
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D.I and III
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E.None of the above
E显示答案
