2. 外语
  3. For which of the following pairs of integers is the least common multiple of the integers minus their greatest common divisor th

For which of the following pairs of integers is the least common multiple of the integers minus their greatest common divisor th

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问题 For which of the following pairs of integers is the least common multiple of the integers minus their greatest common divisor the greatest?
选项 A、3,12
B、5,6
C、10,20
D、11,12
E、15,30
答案D
解析 下列哪一对数的最小公倍数与最大公约数的差最大?
解：本题的正确答案是(D)。“the least common multiple”是最小公倍数；“the greatest common divisor”是最大公约数。A)12-3=8；(B)30-1=29；(C)20-10=10；(D)132-l=131；(E)30-15=15
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