2. 外语
  3. Column A Column B The number of positive divisors of 24 The number of positive divisors o

Column A Column B The number of positive divisors of 24 The number of positive divisors o

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问题 Column A                                   Column B
The number of positive divisors of 24      The number of positive divisors of 50
选项 A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given
答案A
解析 本题的正确答案是(A)。比较的左右项分别为24和50正因子(positive divisor)的数目，根据因子数求解公式可得：24=2的3次方×3，所以24的因子数为(3+1)(1+1)=8；50=5的平方×2，所以50的因子数(2+1)(1+1)=6。
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