2. 外语
  3. m equals to the product of 54 and 63 and m is divisible by 3n, what is the greatest possible value of n?

m equals to the product of 54 and 63 and m is divisible by 3n, what is the greatest possible value of n?

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问题 m equals to the product of 54 and 63 and m is divisible by 3n, what is the greatest possible value of n?
选项 A、2
B、3
C、4
D、5
E、6
答案D
解析 m=54×63=35×2×7，m可以被3n整除，那么n最大是5。所以答案为D选项。
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