【GMAT考满分数学PS题库】What is the difference between the twelfth and _真题_答案_解析 GMAT考满分官网

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题目内容

What is the difference between the twelfth and eleventh terms of the sequence 0, 0, 1, 4, 11 ... whose $n$ th term is $2^{n-1}-n$ ?

A
20
B
31
C
63
D
123
E
1,023

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正确答案: E

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