【GMAT考满分数学PS题库】Set A is composed of nine numbers, labeled A1 thro_真题_答案

Manhattan - 数学PS - 57

题目内容

Set A is composed of nine numbers, labeled A1 through A9. Set B is also composed of nine numbers, labeled B1 through B9. Set B is defined as follows: B1 = 1 + A1; B2 = 2 + A2; and so on, including B9 = 9 + A9. How much larger is the sum of set B's elements than the sum of set A's elements?

A9
B18
C27
D45
E90

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正确答案: D

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