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(请给出正确答案)
-30,-4,(),24, 122, 340。
A.-1 B.-2 C.6 D.13
A.-1 B.-2 C.6 D.13
参考答案
参考解析
解析:-30=( -3)3-3,-4=(-1)3-3,24 = 33 -3,122 = 53 -3,340 = 73 - 3,底数为等差数列,故空缺项为13 - 3= -2,正确答案为B。
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