GRE数学真题Exercise 19单选题【小站备考】

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Question 1 Selected one answer choice

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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

A.I only

B.II only

C.III only

D.I and III

E.None of the above

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