-1 1 -4/3 2 ( ) 16/3
2023-06-15
A.13/4
B. –16/5
C-13/4
D.16/5
参考答案:B
B. –16/5
C-13/4
D.16/5
参考答案:B
原数列可变形为-1/1,2/2,-4/3,8/4,( ),32/6,分母是自然数列,分子是公比为-2的等比数列,所以未知项为8×(-2)/5=-16/5。故选B。
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